I'm highly skeptical that heavily restricting buying and selling of companies in general will be a better way to run a market when it seems your goal is to prevent monopolies (or put another way, ensure competition).
Laser focused policies work for a short periods but tend to be worked around quickly as the thing they regulate falls out of favor in lieu of something functionally the same but different enough it doesn't match. Blanket policies tend to stifle the market in general, causing other problems. Rather than assuming that any specific law actually "solves" the problem, we'd probably be much better off setting criteria we're trying to match and and reassessing regulations regularly to try to meet that criteria. Anything unresponsive will be routed around.
ah, the markets I am talking about are goods and services markets. Financial markets, they take care of themselves, and at the same time garner no sympathy from the majority who don't participate in them.
if monopolies emerge some other way, sure, break 'em up just the same.
But right now we let the market consolidate to the point where major industries have 2-4 major players with 80-90% market share between them.
versus scenario 2, Company A is profitable. Company B is smaller, but up and coming. An announcement is made that A will buy B and everything will be better. Layoffs ensue, product lines are dropped, employees and customers are very unhappy, but prices and profits are up.
Since scenario 2 is quite common today, and scenario 1 is relatively uncommon, yes, ban it, that's a better way to run markets.
We're conducting a thought experiment here. So we think through the implications and try to figure out if there is a way to achieve benefits for all, benefits that we know exist. Don't be scared of a single negative scenario, have to look at the big picture, what is better overall. I'm glad billionaires have the freedom to build kooky submarines that other multimillionaires can climb aboard and go on dangerous adventures, sometimes ending in the ultimate sacrifice. Why a whole bunch of other people who were uninvolved engage in weeks of hand-wringing, I can't grok at all.