What really needs to happen is for new ways to organize startups to distribute the risks and responsibilities better, so that it's not up to the goodness of the founder's heart to ensure a good outcome for the employees.
Of course, this implies that the pie is being made bigger, the risks and responsibilities being spread out are actually building more value in the company so as to generate a bigger exit. So far though founder-level discipline and risk-taking is rare enough in one individual that this is the situation we have to deal with.