European regulations and taxes always come up in these threads and some libertarians complain about how it's an unfair way to treat a digital company that shouldn't pay taxes.
Just remember that the United States are subsidizing tech companies (tax amnesties) and all the upside (high salaries, innovation, stock market growth etc...) is going back to the US while the downside of tech companies (electoral manipulation, teen depression, tax avoidance, privacy breaches) is only felt in Europe with no upside.
In addition, the United States is exporting its tax system around the world and imposing costs on the rest of the world in the process via FATCA and FBAR.
Just remember that the United States are subsidizing tech companies (tax amnesties) and all the upside (high salaries, innovation, stock market growth etc...) is going back to the US while the downside of tech companies (electoral manipulation, teen depression, tax avoidance, privacy breaches) is only felt in Europe with no upside.