I believe a wrong decision can break, but the right decision rarely "make". A simply "adequate" decision followed by brilliant execution is what really "makes". In that sense, they should be compensating the people who execute the decisions more, not the ones who call the shot.

I also believe that a lot of the "importance" of a board member comes from their social network. "Let me call the CEO of AWS and figure out what we can do"- kind of thing.

Opposed to engineers who usually face consequences on bad decisions, these rich people rarely have any meaningful accountability. So tossing a coin is fine.