It's all about the blockchain. Bitcoin is just a member of that, which is what makes it valuable. But will it stay there forever? Well, that's kind of like assuming the IBM will be the only manufacturer of computer chips for the rest of eternity. I don't think that they can last forever, but they've certainly got the market cornered. They'll always have dominance over it, just like Bitcoin does over crypto, but eventually, somewhere, someone will find a better solution. Something more scaleable, faster, and practical.