I live and work in two non-english speaking countries. In both countries, trying to sell non-native language UI and non-local payment processing is a no-go. I

I live and work in two non-english speaking countries. In both countries, trying to sell non-native language UI and non-local payment processing is a no-go. I see downright copying as wrong but are there alternatives other then building something with similar features/workflows? I am genuinely interested.