Airlines have merged from 12 major carriers in 1980 to 4 today.

A handful of companies control the pharmaceutical industry.

Four giants control 80% of meat processing.

The evidence of corporate concentration is everywhere.

And fewer competitors means higher prices for you.

@rbreich

Progressive profits tax linked to market share. NOT punishment for success. Incentive to divide company into competing daughter companies.

More choice = more freedom.

Detect excessive market share various ways, but mostly by (1) Asking customers how many choices they had, and (2) Checking complaints from wannabe competitors who were blocked from competing.

What is wrong with the idea? Or what's your better one?

@shanen @rbreich you need more rules on ownership / stake to make this actually work. 12 companies owned / controlledby the same person / group isn't any better than 1 company.

@the_wiggler @rbreich

Yes, you are right but that's what the existing laws cover and I'm not saying those laws should be ignored.

When the daughter companies are created in a single-owner situation, the "market share" with high tax rate would span the daughter companies because of the ownership linkage. To reduce the tax rate, the single owner would have to narrow his ownership--and of course you'd have to continue watching for cheating and attempts to hide market dominance.