> it is just mind numbing regulation coupled with systematic risk aversion.
It's also exceptionally difficult and time consuming to rapidly scale through the EU with its many local economies/languages/cultures, versus the giant and quasi homogenous US market. And you get Canada pretty much as a freebie with the US market. That's $24.x trillion in economy in just two markets (nearly 50% larger than the EU). By the time you slog your way through a bunch of the EU markets, you'll find that a US venture capital funded competitor is already several times larger and turning its attention to your home market/s (putting you on the defensive, while they've locked up the lucrative US market and can pummel you endlessly with the financial resevoir that comes with that).
If you're in a smaller nation in the EU, the ideal is to go right after the US market first as a springboard (assuming the product/service is globally useful and will benefit from grabbing the US market). That's especially true if you're early and have an opportunity to lead the US market.