I think your overestimating how much people will tolerate deprivation before turning on the system. After a certain point people will reject the system, sometimes violently , and seek a new way of organizing society. It’s why the great depression didn’t turn into the corporate hellscape you envision even though companies were just as powerful at the end of the 1920s. Barring some sort of military coup you can’t subject a majority of the population to slavery and poverty without those people revolting.
The system relies on the at least tacit consent of the majority of the population, if you break that it becomes unstable and in that instability new ideas can come in. This is why most successful revolutions follow a crisis, one that discredits the current ruling order and allows something new to take it’s place.
It can be dangerous though, that new thing could be FDR or it could be Hitler, but it’s bound to happen eventually and our best hope now is to lay the groundwork so that when it does we get a leader ready to usher in a new green economy.
I am not gambling anyone’s life. I have almost no power and can’t do anything to create or delay a crisis. The best I will do with my limited power is try and make it so the organization on the ground is ready to attempt that leftward shift if/when the crisis comes.
It could end in a fascist dystopia, but I think that’s less likely. At least in the u.s. where fascism never took off in its heyday before it had any stigma. If your talking about something with no evidence then that fascist speculation would be something, at least there’s precedent for a Keynesian new deal in the U.S. I do recognize it as a possibility though and that’s why I said probably, not with “absolute certainty”.
If the crisis doesn’t happen we may all die as well as neither party seems willing to deal with the climate catastrophe. That outcome seems way more certain to me, as shown by the repeated calls for action in the last 2 decades falling in deaf ears, than fascists taking over if a crisis does happen.
The way I see it is there’s a 90% chance of severe climate catastrophe on the current course, and a 30% chance there will be a fascist takeover if there’s a crisis, but a 50% chance for a green new deal. These are all completely speculative, but so is any guess on the future and I like to believe my guess has some backing in historical reality.