I definitely understand where you are coming from (and I didn't downvote you), but I have to disagree.

That employee (we'll call her Sarah) isn't being paid to see how a startup is created; she's paying to see how a startup is created.

She's paying heavily. She's losing money in the form of a lower salary compared to equivalent jobs, and she's losing money in the form of losing free-time compared to equivalent jobs.

Sometimes, that payment is very worth it. But it's a payment.