I don’t think the fact that Google, Amazon, and Facebook were built in the US is down to EU regulations.
It’s no more difficult to start a tech company in Europe than it is in the US, and it’s generally no more onerous to grow it, from a regulatory perspective. But ambitious entrepreneurs often head to the US in order to tap into a larger market and more developed ecosystem.
So I’m not sure the analogy is that valid. But yeah, I do think that EU regulation of AI may be an additional factor that skews the playing field.