Ok, lets do this then:

I call complete and utter bs. If taxes were a reason, Silicon Valley would be on Virgin Islands.

This is a totally idiotic argument. My point was US vs EU, not vs some tiny backwater country with a population that fits within a small city district.

Of course you need talent and infrastructure, but both the EU and the US have that. The differentiating factor is tax and regulations.

And this proves your view being overly simplistic and unconnected to the real world. They chose to settle their profits in these countries, not their development.

Again, a totally idiotic argument. If that person had any knowledge about how IT companies operate, they would know, that Google, Amazon, Microsoft and almost all other tech gigants have quite big development offices in all of Europe too. But they put their head quarters where tax and regulations are nice for them.

The real reason is, that you need talent and you can attract global talent with the global highest pay. US was rich before, so global talent naturally gravitated towards it. Furthermore and probably foremost, the US were decades ahead of most countries after WWII. It is no suprise that computerization happened there first and that subsequent business models like private operating systems could develop there first, as a very result of that. Everything boils down to the trajectories of the war.

Total bullshit from start to finish.

If this was the case, then Europe would, for example not have the massive automotive, pharma, aviation or chemical industry, and we wouldn't have the only company worldwide that is currently able to buld the machines that can create the most high tech chips (ASML).

Also, that guy probably doesn't know that Google, Facebook, Twitter, Amazon and many others where founded over 50 years after WWII. Even Microsoft and Apple were founded 30 years after WWII.

Computarization didn't happen in the US first, it happened at the same time in the USA, Europe and Japan.

Successful computer manufacturers in the 50s where (among others) IBM, Burroughs and GE from the USA, but also Siemens, Zuse, Bull, Elliott and dozens other companies from Europe and Fujitsu, Oki Electronic and NEC from Japan.