There are a lot of cryptocurrencies right now, but Bitcoin is still the most popular cryptocurrency. I think there are many projects that have more capabilities than Bitcoin, and Bitcoin has gained this reputation and value only because it is the first digital currency with a blockchain network.
The great idea of Bitcoin made these currencies form a large and organized network without any single organization, and all that is needed is for these users to continue. Of course, the bitcoin currency must naturally be present in exchanges to maintain its value, otherwise it can lose its value altogether.