There are also people who seem to systematically copy ideas from english-language-only or US-only web services and make a localized copies of them to some EU-co

There are also people who seem to systematically copy ideas from english-language-only or US-only web services and make a localized copies of them to some EU-countries. Of course they might just come up with the same idea and find that there isn't a version in their first language, who knows. Anyway, you can make an almost carbon copy me-too product to a new market and be successful.