you need to understand that Bitcoin isn’t “crypto” , it only looks like crypto on the surface. That’s why no other crypto can really threaten Bitcoin.
Bitcoin is crypto but the difference is that blockchain exists because of bitcoin, the blockchain that is used by other coins and other areas today. This makes bitcoin more popular because other cryptocurrencies are copying it and not unique like bitcoin. The founder is not known, nobody know if Satoshi is a group, a ma or woman, a Christian, Muslim, Buddhist etc. It has all the characters that can make it prosper.