Would they need BTC? With 1.3 billion potential users wouldn't that be enough?
Having their own crypto coin for improving their economy is a pretty smart move . But the support will only be shown by natives .
Obviously China's population will somehow strengthen their local coin ( even though a lot of population includes elderly ) . But the support that is with bitcoin cannot be shaken by any other local coin . The main proof is the rise of bitcoin even after the China ban . But if every country starts making their own crypto coins then that might be a reason of big concern for sure.
Well I think it will not work like bitcoin because bitcoin is decentralized and there a lot of things which bitcoin keep hide so bitcoin is not an ordinary currency and I dont think so any other crypto can replace bitcoin because bitcoin know how to keep it self-stable with high price in market so no need to worry about any other coin in market.