[fragmede]

Step 4 glosses over a ton of details but is sufficiently correct in Apple's case, which pioneered the Double Irish. That was supposed to stop in 2020, but unless you keep up with the world of corporate finance and global tax law, things keep shifting.

Apple's easy to pick on, they're one of the richest companies in the world and should pay more taxes. But for companies that are less successful, it's entirely possible that the second company is actually losing money. Without an appropriately sized army to track through the 200th company (tracking transactions between two companies is simplified to make the tax evasion easy to understand. Real world tax evasion is dramatically more complicated.)