And that's before we get into the sort of extremely high and confiscatory tax rates (on both income and wealth) that would be required on not only the rich, but also on the middle class and working class, and even the working poor of the Global North. Which the oligarchs would so artfully dodge with ease of course, leaving the rest of us holding the bag. Though to be fair, not all degrowthers necessarily agree with that idea, and many prefer Pigouvian taxes on pollution and resource depletion (most notably carbon taxes), and perhaps also taxing advertising revenue as well, instead of income and wealth.
Some excellent articles casting doubt on degrowth can be found here and here, truly food for thought indeed.
Of course, we clearly need to end our inane and insane addiction to growth for the sake of growth, the ideology of the cancer cell (as Edward Abbey famously said) which ultimately kills its host. We need an economy that is no longer dependent on growth and can still provide prosperity for all with or without growth. We need to stop obsessing over the fundamentally flawed metric of GDP, which really ultimately stands for God Damn Profits nowadays. Rent-seeking, usury, artificial scarcity, cronyism, speculation, and other forms of parasitism and economic manipulation from the top down are the ultimate reasons why our current economic system is so hooked on growth for the sake of growth.
As the futurist Walter Ignatius Baltzley noted back in 2015, the only way to end this system of cannibalism (sorry, "capitalism") is to give it the ONE thing that it absolutely cannot survive: ABUNDANCE. That's right, capitalism needs scarcity to function, which is why it has to create so much artificial scarcity nowadays to prop itself up. Capitalism will thus fatally overdose on capital, in other words. Abundance is of course the polar opposite of the sort of eco-austerity of degrowth. With enough abundance, we can humanely euthanize this dreadfully toxic system for good, and easily transition to post-capitalism, and ultimately a post-growth and post-carbon economy.
For example, Baltzley in another article applies this idea directly to Big Oil. How do you win a tug-of-war against a much stronger opponent? By simply letting go of the rope, and letting them fall on their butt. Thus, as crazy as it sounds, get out of the way and simply give the fossil fuel fat cats what they say they want so much. Yes, you read that right. Let 'em "drill, baby, drill", and "frack, baby, frack"! The government can even buy their oil (and natural gas) at a premium and then turn around and re-sell it at a loss. The resulting massive surplus of cheap energy would flood the market, bringing down the cost of living in general, and by doing so....will also bring down the cost of renewable energy alternatives like wind and solar that will ultimately replace fossil fuels, while oil and natural gas become less profitable over time. In the very short run, it would be quite a boon for Big Oil, but in the long run it would be giving them the very rope with which to hang themselves. (Fortunately for us, Big Oil is extremely shortsighted.)
Yes, it's quite the Hail Mary pass indeed. But when both Plan A and Plan B have been ruled out as impractical and/or politically impossible, and time is running out, that ultimately leaves us with Plan C.
So what are we waiting for? Prime that pump, and prime it good! Let Big Oil and the oligarchs enjoy their utterly foolish pride before the fall. Remember, the bigger they are, the harder they fall.
Oh, by the way, wanna hear a joke? Peak Oil. That's the joke. Yes, oil production will inevitably peak at some point. Duh! And hopefully demand will peak before supply does. But we still have more than enough to deep-fry the planet many times over.
Quite frankly, the biggest supply constraint of all right now is NOT geology, but rather geopolitics, as Europe is currently learning the hard way with Russia weaponizing its natural gas against them. And the aforementioned plan would solve that as well. Canada alone could supply more than enough (liquefied) natural gas to Europe to be free from Russian energy dominance, but they won't, because they never developed the export facilities to do so in time. That leaves the USA to fill in the gap, of course.
UPDATE: So what exactly will post-capitalism ultimately look like when the dust finally settles? The TSAP doesn't claim to know the details. But eventually it will very likely organically evolve into something like a gift economy to one degree or another, as well as a steady-state economy of course.
One thing is absolutely certain, though: if we are to create an economy that no longer has to "grow or die", we must first phase out and eventually abolish usury entirely. That means that interest and all other kinds of fees for the mere use of money will need to be officially capped at ZERO, period. To avoid seizing up the financial markets and crashing the economy, set a "sinking lid" at, say, ten percent APR, and then gradually lower the cap each year until zero is reached. Usury has ultimately led to the financialization of the economy, inflation, worsening inequality, and just about every other social problem that has a name. There is a reason why it used to be considered such a sin. Let's make it history.
Oh, and by the way: unless the population also shrinks as well at least as fast as the economy does, degrowth is, ipso facto, fundamentally an exercise in futility. That is true both from an economic perspective as well as an ecological perspective.
FINAL THOUGHT: We may have been a tad too harsh on some of the degrowth advocates, particularly Jason Hickel, by lumping them all together. While our roadmaps for how to get there may diverge, our ultimate goals at least seems to be more or less the same as Hickel's (though that's not necessarily true of some of the other degrowth advocates out there). Ditto for Charles Eisenstein and Kate Raworth as well.
See here as well.