So Apple might have $100B stuck in Ireland, unable to bring it to the US, but it doesn't matter, that money still counts for their shareholders.
And it's the same thing here. If you try to tax $10B they'll just have 100 companies all making $9.9B/yr, in a variety of different countries, completely separate from each other, and you're back where you started.
And while this would be extremely complicated/expensive for them to manage, it'd be profitable because the alternative is to get a 100% tax on those profits.
Taxes aren't easy. And calling a company that sells phones a "society-destroying problem" is a bit hyperbolic, don't you think?
None of those things make the proposal impossible however.
It would be a dismal society indeed if we unilaterally surrendered to every instance of centralized malevolent power without a fight.
edit: Or lets pick a real example and see how that works out. ArcelorMittal is a major steel provider. They sold $53B last year. They had a tough year though, so their final net loss was actually about half a billion.
Under your proposal, they would have lost 43 billion dollars. Uh oh, you just collapsed the steel industry.
Seeing as how there are very few massive companies that weren’t created by piecing together smaller companies in the first place it shouldn’t confuse anyone. Also companies spin off parts constantly when they think it’s in their interest so they idea they won’t know how to do it is frivolous.
You could certainly make an argument that my $10bn number is too low, or that there should be a sliding scale of some sort but the concept and it’s likely outcome is very easy to understand.
Disincentivizing growth is... dumb.
Our competitive landscape is being absolutely choked by anti-competitive behavior, monopoly, and single point of failure problems in supply chains, labor markets, commodities markets, and everything else.
It’s unsafe and bad for society and we should take decisive and aggressive action to stop it.
Instead we’re so accustomed to it and dulled into submission by decades of corporate PR efforts that people will somehow think it makes sense to reflexively advocate for lawless monopolists[0] on message boards in the name of “growth”.
[0] https://www.reuters.com/article/us-arcelor-africa-antitrust-...
https://www.hindustantimes.com/business/arcelormittal-fined-...
https://www.luxtimes.lu/en/business-finance/arcelormittal-fi...
Also, I'm not sure the SPOF problems are a result of anti-competitive behavior - AIUI, it's because JIT delivery between different entities is far more cost effective, and the human brain tends to ignore hidden risks.
There are a lot of jobs created between the $10B and $1T levels. And as citizens of Apple's home nation, it greatly benefits us that those high-quality jobs are available.
A 100% tax (or even 80%) tax would discourage a lot of products from existing. Apple would probably move down to simply offering just phones and apps only and removing everything else. I know that sounds good in theory, but there are indirect benefits for these other services that they offer, in addition to jobs. It also bolster's California's economy all the way down to bodegas, bars, restaurants, and hobby shops.
So an alternative tax like 60% on revenues above $50B that can not be deducted against might be a more reasonable alternative.
For example, if a company wanted to keep growing, it would have to split organically into separate corporate entities. What would stop them establishing "favored" relationships with each other? Say for example Facebook splits out "Zuckerburg data centers inc" - what's to stop them pricing themselves above market to avoid taking on other customers, and then giving FB a hefty discount? You could mandate that there be no board overlap, but shareholders would probably receive a split.
In that context it wouldn't be all that hard. You'd need to figure out some definitions for common ownership, joint enterprise, and so on. A lot of those laws and definitions already exist. It's only really in the last few decades that we've abandoned antitrust law but we have successfully done things like this in the past.
Cannabis companies couldnt do "real banking" do to federal shenanigans.
So instead why dispensaries would do, is make another LLC who buys the building and all the building permits that are municipally regulated - then as the municipality zoned and approved locations and projects for dispensaries and distribution licenses (which had a multitude of their own specific restrictions)
They would then rent the facilities for ridiculous rental amounts which the rental company would legally be able to put into any regular bank - then make loans to the cannabis companies and dispensaries for whatever operating expenses were needed.
This got really ugly when Med Men, based out of LA, was made really public because of douchebaggery happening in the company revealing how they had been gaming their own investors etc...