Litecoin is faster, monero is more private, ETH has smart contracts and there are much more altcoin with much more features, even Bitcoin Cash is faster than Bitcoin, but BTC keeps rising much faster.
Don't you think it's just because of the name?
Bitcoin is just an application of the blockchain technology in the currency area, and it's similar to the bitcoin cash/lite currency. In addition, the blockchain can be used in many other neighborhoods for information transfer/record/encryption, such as identity/power/property/contract/reputation/logistics, etc.
It's just that bitcoin is known to the public.