You actually think that for-profit corporate boards are significantly different, especially in the startup/early IPO phase?
Also, I worked in startups and my ex-gf in various nonprofits, and the amount of drama she saw was way higher than in the commercial world
The board reports to the shareholders and the management reports to the board.
In early stage companies it is possible and likely that all three are the same person, that doesn't change the different fiduciary responsibilities for each role they play.
Huh? Plenty of startups in the stage being referenced are still majority owned by the founders.