What you're losing when you kill / expel the wealthy (whomever they are) and expropriate / redistribute property is cultural investment in institutions.
In that people may feel the previous system was unjust, but they nevertheless believed in it. That belief (aka trust) takes generations to build.
Revolutions which violently dislocate institutions don't replace them with alternatives: they start from zero.
This has profound growth consequences when, for example, it takes four+ decades for people to trust the legal system again. Or banking. Or anything.
In that the things you have to say and positions you have to hold to inspire people to revolution, are ill suited to post-revolution rebuilding.
Which is probably why it's rare: you'd need someone who's self-aware enough to hold both views, talented enough to have both skillsets, and politically astute enough to navigate that pivot with their colleagues and constituents.
I also think there's a cultural factor at play. In addition to wealth and education, more well-off families may also have cultural capital which encourages things like entrepreneurship, long-term thinking and higher self-esteem. Even if these are secondary to wealth, they may still have an impact. I think the impact of culture in general is underestimated as it very much influences human behaviour and outcomes, not just politics, geography etc.