So it isn't really a "last resort". It's more of a "well you didn't compromise, so now our choice is to burn the whole system down"
The sans-culottes didn't quite accomplish their goals(at least immediately), but Louis XVI among other elites didn't survive.
Toussaint Louverture et al didn't accomplish their goals, but the French no longer controlled Haiti.
Even Lenin and Trosky didn't accomplish their goals, but the Romanov didn't leave the Ipatiev House alive.
Like many conflicts, one side doesn't have to win for one to lose.
Despite having higher cognitive functions, that impulse still exists and can only be suppressed for so long and so far. No one has infinite capacity to maintain what they see as unfairness indefinitely, especially when it seems that humans make their own rules.
1. Capuchin monkey fairness experiment, total duration: 57s, https://www.youtube.com/watch?v=-KSryJXDpZo
It is a combination of "Other People Have It Worse Than You Do" but uses the past as a point of reference.
We could just as easy compare ourselves to our presumably better off future and say that we have it worse off than them so we deserve to improve things now.
There are examples either way, and sadly you seem right.
I recently read but now can’t find a discussion around this that argued that extreme times promote extreme individuals. A violent revolution is clearly an extreme time and any leader that emerges is likely to have fought hard for their position.
I'd rather die some billionaires minimum wage security squad protecting his gold plated yacht than let some violent freeloaders take my shit and install some cuban-tier communist hell-hole where there's no incentive to produce even basic grain stocks.
There seems to be an open question among the wealthy and political class of how far inequality can go given the modern police state and effectiveness of technology in accomplishing the goal of maintaining or exacerbating the current political economy.
1. See historical populist grivences against aristocracy that result in social restructuring.