Most companies do not actually optimize for profit. If they did they'd stop whatever it is they are currently doing and switch to whatever industry makes the most profit. They don't though, they keep making/doing whatever it is they start with generally. That means they aren't actually optimizing for profit.
That cost has to be factored into the return from pivoting.
* if everyone who sold donuts suddenly went into AI there'd be a huge profit opportunity in donuts - optimizing for profits would be to wait for the other donut sellers to switch into AI and rake in the cash.
* the cost of retooling constantly based on the latest profit fad would just make the toolmakers the main profit center, and the toolmakers would just use their own gear to take all the profits in abandoned markets.
* the constant shift of areas of business would be sub-optimal because most people entering it would know nothing of how to succeed in that field, it's not optimal for your company to be incompetent in an area with much competition.
* labor costs in the "only profitable field" would be through the roof as everyone scrambled to hire competent people - not an optimal way to maximize profit in a crowded industry (also, this compounds with the above point).
In fact this idea is so bad (and yet weirdly beleived by many) that every boom there's memes and jokes about how absurd it is that random companies from completely different industries are getting involved... as if they have a chance to compete against the established players. And even more jokes about how they predictably go out of business.
It’s a middle class fantasy that money is power. Look at the Cheeto. How many times has he been bankrupt? What does he say about bankruptcy? He knows he’ll be fine because power brings money, not the other way around.
Taxing billionaires will help the economy absolutely, but it won’t control the billionaires, because a lot of their deals aren’t denominated in hard currency. We don’t know how to tax favors or threats.
There are other sources of power besides money, but money is definitely one kind.
Consider Twitter. Musk managed to get institutions to put up a fabulous amount of money, but he still had to pay a massive amount himself. If he had $1,000 in the bank and nothing else, that deal would never have happened. Heck, even with $1 billion it wouldn’t have happened. As it was, he got to take a couple dozen billion units of monetary power and convert them into massive non-monetary power.
Like I said, money isn’t the only power. But power is the only thing money is.