[itake]

The US has a huge population of Spanish only speakers and they find success.

I live in Vietnam for over three years, and while I continue to practice the language, I literally cannot pronounce the tones for about a third of the letters, but I still have a very happy and comfortable life here

[account42]

They find success by forming their own enclaves instead of integrating. Great for them perhaps but not something that the host country has to accept.