I'm sorry this isn't true. Your name wasn't on the line when you took the investment, and the OP pointed out with his "5 startups in 10 years" line, it's very easy for early employees to walk away. That isn't as available to founders. There is much more burden (reputational, financial, emotional) on the founders.

I've been a founder, and I've been a key early employee. It is very different.