not entirely true, they have as much stake per investment as you do or I do if you want them out invest 10x what they have and you have a boardroom where they're smaller
votes are dividends awarded to those the shareholders want the dividends to pay out to, if they invested to get a vote let them have it, if you want a stronger vote, invest! ;)
if they no longer want their investment they'll sell it and someone else will hold those shares and decide who steemits dividends get rewarded to, you are also an owner of steem based on your shares.
There is a reason that there are laws in place in corporate structure to prevent the activity that is happening here. Investing 10x what they have isn't a reasonable option because that is millions of dollars that pretty much no one has.
A director of a corporation can have 99% ownership of a company and bleed the company dry to fill their own bank account and what happens? Does someone need to buy their shares from them to make it right? No. They are removed from their position in the interest of the 1% of shareholders by a governing authority. We don't have such a governing authority, so this all comes with the territory, but it doesn't mean it's not going to do severe harm to the platform.
Calling them CEO's is not really accurate, because CEO's exist in a world where they are held accountable by a board of directors, by a governing authority, or the other share holders. Steemit whales are held accountable only to themselves and other whales.
the problem seems to me that the more power they accumulate, the faster they accumulate more yet. the rest of us somehow doing something about it seems unfeasible.