The state of mind is changing though, especially with Facebook - Europeans are aware what happened to the US in the last few years and are scared of a new wave of fascism powered by High-Tech social networks and fake news, more so than US citizens. This won't lead to a European competitor for Facebook though, just to regular people shunning everything that's made in the US. So in the long term only China will profit from the US's tendency to create (too) big corporations. The bigger is better mindset is ultimately not compatible with European values.