that's a very pessimistic view, and one that doesn't take into account the reality of being an executive or board member.
i'm a co-founder/executive of a small technology company. i have employees that used to be in my position when they were younger, but now they want to just do their jobs and go home.
in other words, they don't have intense, heated discussions about strategy, make firing and hiring decisions, make large spending decisions, discuss the financial bookkeeping side of the business, try to raise money from or sell to really unpleasant people, soothe angry customers and employees, because they don't want to. they don't want their work day interrupted by a bunch of anxiety-ridden executive half-conversations and rants with no real conclusions or answers.
almost none of their personal money is on the line, and very little of their potential income is on the line. they can go and find another 100k job tomorrow, they could possibly even make MORE money at their next job just by the dumb luck of losing their current one. did you ever think about that?
but... now here's the part you won't like: the reason you hold your opinion is because you want something more than what you have now. and that fundamental mis-alignment is going to cause you some level of frustration, because you think of yourself as a shot caller, when you aren't (or, more specifically, don't have to be). and when you're told what to do you get resentful, because you think you know better. well, maybe you do, maybe you don't. but you don't write the checks, and that's what a business is.
if you want to be involved at the upper levels, nothing is stopping you. you just need to either find that job, or create one for yourself.
stepping into conversations in which you have no context and no skin in the game is a real fast way to get yourself shunned because you have shared NONE of the downside but you walk in the door like you have all the answers. quite frankly, that's bullshit. and quite frankly, even if it isn't, you don't have any influence in that situation so it's irrelevant.