Inequality and other such issues are universal, the French Revolution was not. What was unique about the French Revolution is not even that the government bankrupted themselves fighting wars and then tried to refill their coffers by sharply increasing taxes in a fashion that disproportionately affected the lower classes, but that this was all paired alongside widespread crop failures that sent the cost of food skyrocketing driven widespread food scarcity.

The average person couldn't care less, at least in terms of action, how much money somebody else has. If people have food in their belly and a roof over their heads, you're only going to draw out radicals. And in modern sharply divided societies those radicals will be framed (probably accurately) as being disproportionately made up of one side, and the other side will oppose them all their might and widespread public support behind such opposition.

So there will never be a popular revolution in a place like the US in its current divided state. The most probable scenario by an overwhelmingly wide margin is 'nothing', but the only other possibility would be a civil war. And I do think that's possible, but the chances are extremely remote. It would require something very extreme like one side trying to ban the other side from political office. We've probably been closer than some might expect, but we're now probably much further, rather than closer, to those times and outcomes.

[1] - https://en.wikipedia.org/w/index.php?title=French_Revolution...