Yes, Europe is a laggard in tech, but I don't see any relationship here. Even if they wouldn't fine these companies, EU would still lag, and now that they are fining them, EU companies are not at an advantage, nor growing faster.
If we allowed the same kind of unrestricted development we'd have more money and growth but we'd be just like the US. Which I personally don't want for sure. I'm glad to be living here. It's not all about money and economy.
But they won't because the EU is a huge market and money speaks, while that happens they need to comply with the laws. Stop breaking the laws and you stop being fined, it's pretty simple for multi-billion/low-trillion market cap companies, innit?
So far only China has managed alternatives - and only thanks to govt exclusion. US behemoths just eat everyone else up - even in the global South.
I even moved to a lower wage country in Europe even to a pay cut, money isn't everything. Quality of life is. I won't live in a country that is anti-LGBT and with such a culture glorifying toxic masculinity. And at the same time giving a huge middle finger to the world by having the most polluting country in the world per capita quit climate change reduction efforts.
I don't think you understand how badly Trump has destroyed the reputation and goodwill of the US to the rest of the world in just one year. Everyone I know is actively trying to disconnect from US products and services (though admittedly I am in more activist circles)
And salaries here are a lot higher than that. Even here in a lower-wage country. Also, I don't need a car where I live which scraps a whole category of expenses, healthcare is free and I have protections in case I get fired.