Well yes, there are altruistic reasons too. I'd like to say the same for myself, but it's not like I've put in the effort to find out how to actually help such people--and presumably those ways exist.

But it even makes sense according to a colder, less human logic (which, regrettably, is often what matters). Like maybe I want to pressure the makers of a VR headset into letting me root it so that I can prevent it from streaming biometrics to the vendor. If I can delay the release of the latest headset versionin a way that causes the news about the delay to focus on how poorly certain workers are treated, I can later threaten to do it again if they don't give me what I want.

How much less? 10% 50% 80%?

That would depend on my absolute income and my overall situation at any given time.