The US has these issues as well as still has a strong tech sector, you also have to keep in mind a successful outcome for the EU won't be what the US has right now either. You get charts like this floating around the internet: https://postimg.cc/Yh8TPs8g

Nearly always presented as a 'dick swinging' look how great we are chart in a EU vs US vs China stand off. However it reveals flaws in the US as well. A successful tech sector in the EU will be lots of small bubbles where the combined area is somewhat approximates what is in the US and China.

A handful of giants is not desired here in the EU, you can see the issues this presents in the US as well, chiefly: it's distorting the political system to becoming like Russia. Oligarchy.

That's not even getting in to the chart is deeply flawed but that's not the point I'm making.

Yes, certain issues are found in the US, too, but doesn't mean they shouldn't perhaps be addressed.

Some things also might need scale at least in aggregate and either tech leads to some sort of Coasian singularity or having a lot of small things comes with additional transaction costs.