Well, it depends on the definition of "startup." If you work exclusively at seed-stage or A-round companies with like less than 15 employees, your salary will be a lot lower than if you work at lots of B and C-stage companies.

I've worked at companies that at least called themselves startups for my entire career, and I own a house in San Bruno, my wife and I each have paid-for cars, we can put our kids through school, and we put away savings.