Only if you were unable to actually turn a net profit.

What would happen instead is that more actors and writers would be willing to work with you because they knew they'd get a fair share of the whole deal.

The problem there, is that the talent that would truly help you succeed can already demand gross participation from any studio. And the rest, while they would undoubtedly prefer to work for an honest studio, would climb over one another to land almost any work regardless of accounting policy.

That is the attitude of all the people who later look at a either a working process, or a working product and say, "damn, why didn't I think of that?"