Simple, Bitcoin has a proven usage case as a store of value. It’s instructive that most coins try to carve out some differentiation based on much smaller use cases, such as prediction markets, buying things completely anonymously or adding a decentralized name server. It has a large lead as a store of value over every altcoin in having existed 8 years without failure. The security of Bitcoin has been proven far more than its much younger counterparts with usage by almost every metric exceeding that of altcoins. Also, it is more accessible, with more exchanges, more merchants, more software and more hardware that support it. Plus, it is far more liquid, with much larger volumes than every altcoin.

When you compete with Bitcoin, not only are you competing with its much larger user base, development team and mining operation, but you’re also competing against the very large ecosystem of startups, open source projects and entrepreneurs.