The language barrier is a HUGE problem for EU businesses. It's the main reason why online services grow 100x slower in the "European Union" compared to the same service being offered in the US, where a "state's language" makes no difference, because it's the same everywhere.
Because there isn't such "high scalability potential" as it is in the US, due to the language barrier, you also don't see as many investors throwing millions of euro at "ideas with potential".