Merely translating the interface is not the main problem IMO. Word of mouth, TV, newspaper, youtube channels and other "influencers"... Everything more or less

Merely translating the interface is not the main problem IMO. Word of mouth, TV, newspaper, youtube channels and other "influencers"... Everything more or less stops at the border. There are also significant cultural differences that might make it difficult to make your product appealing to the whole market. In the US if you get the hype going about your startup, get mentioned by a few high-profile newspapers, news programs and Instagram celebs you can ramp up pretty quickly. In Europe your brand can be mainstream enough that it becomes a common name in Italy while at the same time nobody ever heard of you in Germany. Ever heard of Skyblog? I remember that in the early 2000's it was basically French Myspace. It was spawned by a French radio but became super popular on its own, all the French teens back then had a "Skyblog" (and an MSN messenger account). How many non-francophone Europeans have heard of a Skyblog? Not many I'd wager. Actually I doubt that even today's French teenagers know what a Skyblog is, they're using Instagram and whatever else while Skyblog is joining the Minitel as a footnote in the history of the French internet.