I see the tiny little insignificant UK is actually 20% of the whole EU, who boast of having a 440 million population.

My intuition is that it's also quit a fragmented market with many different languages, cultures and local regulations.

Thanks, good point. So the EU really isn’t the biggest market then. I’m surprised it’s half the size of the US.

But it explains why products don’t target Europe as much as while it’s big, it is clearly simple why a company would target the US with its single language and more uniform culture than Europe with all its diverse languages and cultures.