That "convincing" happened when they agreed to become employees, or as part of receiving their stock options. Or their contract states their shares can't be di

That "convincing" happened when they agreed to become employees, or as part of receiving their stock options. Or their contract states their shares can't be diluted / what will be done instead. AFAICT those kinds of contracts do exist, but most people can't successfully negotiate for them (outside effectively founding members / top-level execs). You certainly could make a company where that's the default contract. But your fundraising negotiations will probably be quite a bit harder, as a lot more parties will be at the table.