Concerning for you, perhaps. I take the opposite lesson: this incentivizes and invites the exact kind of entrepreneurs you want to have in a country. You profit-driven Americans assume that all entrepreneurs build things to maximize profit at the expense of everything else. No, not everyone is driven by that, and many of the best company builders were not primarily profit driven (e.g. Steve Jobs believed in beauty and excellence). There are plenty of entrepreneurs who want to build things to support the sovereignty and livelihood of the places that they live in while making a profit that doesn’t jeopardize that.
I say, blocking foreign takeover of vital companies would actually incentivize me as an entrepreneur to choose the EU, and I say that as a startup founder in Europe. Because it levels the playing field for founders who believe in sovereignty: now I don’t have to worry about competitors selling out to foreign capital doing better than me due to that.
It is very true that if your company is a political vehicle, having the powers that be enforce that all companies must be political vehicles is quite good for you. America certainly has its version of this in its defense companies. I would not say those are the American companies that make me most proud to be American though.