Do you think the concentration of power should be avoided in general, and let’s say a single person shouldn’t be able to decide on a whim that thousands of people have to do something pointless or harmful, like building a mega yacht?
I know it's not something that's going to happen any time in the foreseeable future, but I think it would be fantastic for our society and economy if the top marginal tax rate was 100%, with that tax bracket starting at (just as an off-the cuff estimate) something like $50 million/year, with regular and capital gains income counted together and taxed at the same rate.
Many people witter about how that means there's "no incentive to do better", but a) if you as a person making $50,000, $500,000, or even $5,000,000 per year think that this applies to you or is ever likely to, you are probably wrong, because even the person making $5M/yr is closer to the one making $50K/yr than they are to the one making $50M/yr, and b) if the only incentive you personally respond to is monetary, you are in the minority, because it's plain from empirical evidence and plenty of solid scientific research that the norm for human beings is to care about doing a good job for its own sake—so long as they're not being burned out, beaten down, and kept poor, and especially if they're allowed to do work that they like doing and are given some degree of ownership in it (not legally/financially, but conceptually—autonomy, a say in the process, etc).
More realistically, I'd love to return to something like the tax structure in what many look back on as a golden age: the post-WWII years, when the top marginal tax rate was above 90%, and yet somehow our industry chugged along at a fantastic pace, and people didn't just stop caring because there was "nothing to work for".
Without them, power eventually gets concentrated into few companies holding monopolies, while the fundamental of capitalism is competition.
The problem is anti-trust laws have not been enforced and we let tech companies hold way too much power.