Blockchain of Bitcoin is not good for the international transactions. It is expensive and slow. Blockchain must be quick and secure to be good for international transfers.
Bitcoin has a lot of users and a very well developed ecosystem. That is why it is so popular among crypto society.
Now appear a lot of cryptocurrency startups that offers more advanced technologies that Bitcoin has. Blockchain is actively developing.
The better and more useful cryptocurrency startups will appear the bigger will be trust to the cryptocurrency and higher price of the tokens.