Many EU start-ups choose to launch their product in the US first due to the 300+ million people market speaking only English, rather than bother with the tiny fragmented markets at home.
It's just much cheaper and easier for start-ups if you're developing a SW product to sell it in the US market first and only when you've made money there, slowly bring it in the EU.
Starting off SW products in the EU is suicide (unless you're targeting some niche in the local market that's safe from competitors from abroad because it ties into some local idiosyncrasies on language, culture and law).
It's just much cheaper and easier for start-ups if you're developing a SW product to sell it in the US market first and only when you've made money there, slowly bring it in the EU.
Starting off SW products in the EU is suicide (unless you're targeting some niche in the local market that's safe from competitors from abroad because it ties into some local idiosyncrasies on language, culture and law).