It seems that bringing a proven American idea into another country more often than not turns into a slam dunk. Just in terms of car-hailing, Didi is huge in China, and Go-Jek in Indonesia just got $3b in funding. If it was between trying something new in a major foreign market or taking a proven idea and bringing it there, why wouldn’t you opt to riff on the proven idea?
Unless the concept was proven by this other country, it cannot be called proven concept for this country. Language, culture, and laws have to be adjusted to those of other countries.
Most likely you have to change looks of products and language to cater to another culture.
Most of the time whats big in one country isn't in another. Sometimes its due to a cultural thinking, other times its not presented in the right terms to the new target market. I have found many examples of great products, services and others in many other countries but they don't quite make it in a larger market. Also, as an investor a proven idea doesn't mean that it will work and you will get money back. Just ask the Uber investors.
It's depending on some factors; technology advancement/development, the state of the economy, rules, culture and psychological complexes .
It's next to impossible having the same idea that worked in America to work in other countries it has to be tailored to fit specifications eg.lack of communication networks,cultural beliefs,government polices,rate of adapYatton, present method used,targeted group (market )age old people hate