alt Hacker NewsEurope, if you want good tech businesses you need to create a tech business friendly environment.
Banning US tech companies without creating (really) fertile grounds for business is just going to be shooting yourself in the foot. A replacement Google won't grow on a farm only fed worker/consumer fertilizer.
It's almost diabolical that the only way Europe can get rid of the US, is to be more like the US.
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On the other hand, if US tech businesses want to keep access to European markets they shouldn't support US politicians who want to override the sovereignty of those nations.
Businesses exist to fill a demand. And the market will pay accordingly. For example:
Spotify SE == Napster US
Netflix US == Lovefilm UK
Craigslist US == Gumtree UK
Hmm. Where was http invented? Where was ARM invented?
There is plenty of technology companies in Europe.
It might not seem like it for the HN crowd, who mostly make a living stringing web libraries together.