Not often.

But making it costlier to participate only makes the proposition riskier or fiscally unfeisable.

That hurts employees.

Startups are useful in that they trade off innovation for risk - a handful of startups make huge impacts and grow into successful companies.

People know that when they sign up to work for a startup - finding out they can't realize the upside potential is the surprise.

Given most employees at "startups" are actually later employees when the companies are larger and less likely to fail, it may actually be that most of them get some sort of payday, even if it's not huge.