As a technical founder with a successful track record, I could be working with any number of businesspeople or all sorts of opportunities, and I'm good at math. Why should I forgo a market rate salary to take a 1 in 100 chance at a lottery ticket, where my likelihood of success is largely determined by the people who also choose my salary? Major conflict of interest. The math does not add up.
I would think my team should be motivated to pay enough to keep each other from leaving for attractive opportunities in this lucrative market. It's one thing to voluntarily give up salary to help the company. It's another to force it by means of a questionably sustainable business model.
Evidence: try to hire yourself a technical co-founder from their job at FaceGoogAmaSoft (or pay equivalent) and find out that money talks.