I think the problem is that a startup is a far riskier proposal for a marketer than a dev. For devs we have a safety net in the most insane job market the world

I think the problem is that a startup is a far riskier proposal for a marketer than a dev. For devs we have a safety net in the most insane job market the world has ever known. Launching a failed startup is almost a right of passage for us. On the marketing side, finding a job after failure is drastically harder, and you'll be set back years in your career since there's a lot more ladder climbing involved in marketing departments. By contrast launching a startup is a pretty solid way to jump your career from mid-level to senior dev.