Bitcoin will have to copy Monero or vanish. Most people don't have the skill to look 10 years into the future. Those who can are worried about several aspects of Bitcoin.
Monero addresses both privacy and security concerns and it will soon have LN and ecash capabilities without sacrificing chain security.
The only thing left that hinders Monero from taking over is that people still do not have full trust in Monero's cryptography which is a fair point.