There is absolutely money in work that requires a clearance. There always has been.

I would also point out that, historically, a lot of "startup" culture comes directly from people fleeing from the more conservative east cost workplace culture. Consider if you can get the life you want working for a security service.

Obviously making between 100 and 200k is a healthy salary, but we shouldn't pretend that it's at the top of the industry. You're agreeing to a very particular work culture in return for middle-industry compensation.