You are chipping away at the legitimacy of the targets of genocide being able to fight back by pointing out "bad things happen when they do so".
To answer your question:
A revolution against capitalists would result in a lot of innocent people dying and having violence visited upon them. That is just a simple observation of reality. If you think that means no revolution would happen, you are merely shifting who the victims in that equation end up being in the end, and allowing the oppressors to continue ruling in the meantime.
You are chipping away at the legitimacy of the targets of genocide being able to fight back by pointing out "bad things happen when they do so".
To answer your question:
A revolution against capitalists would result in a lot of innocent people dying and having violence visited upon them. That is just a simple observation of reality. If you think that means no revolution would happen, you are merely shifting who the victims in that equation end up being in the end, and allowing the oppressors to continue ruling in the meantime.