Hard to see the upside for humanity as we've understood it to date, but its definitely going to be more impactful than just making a buck.
For folks at the implementation level, the problem is often the prize. I just need to get paid enough to not care about how much I get paid. And implicitly contributing to social good is a form of gamification that works well. I've encountered lots of folks who operate in the same way. Yes, we're paying a bit more of a "feed the beast" tax than the good old days, but we're still able to operate with a remarkable degree of latitude.
[1] https://www.quantamagazine.org/quantum-cryptography-pioneers...