'[R]evolution is impossible without a nation-wide crisis (affecting both the exploited and the exploiters).'
Let us again consider the axiom that 'the distinction between the beneficiaries and victims of capitalism has become less clear.' I think this is true at present. But what is the present? Public opinion is not inflexible. A war, a recession, the two back-to-back, such events have dramatic results.
Recall the era 1966 through 1974. Many posters here, in their twenties, probably are not aware that Nixon's downfall was predicated upon a seriously failing economy. Imagine such economic woes magnified by the severity of the Great Crash! Imagine an even larger war occurring at the same time!
One would be foolish to discount such possibilities.
Then, returning to the global picture, let us not discount the fact that capital is presently importing the very conditions that create capitalism's gravedigger (large population of immiserated proletarians).
I'm not all that discouraged...