There are a lot of jobs with high salaries out there, and
most jobs have sufficient barrier to entry that you have to come to the table with something beyond "I'd like some money please".
I don't know, it just doesn't feel like there's a ton of risk of "non-profit board member" becoming the next gold-rush degree track.
Aligning incentives with goals is wise, but it's hard to do perfectly. Humans are still human.