Bitcoin is the mother of crypto currencies. Bitcoin will not be replaced because it is more than a coin, it is a lifestyle, it is a dream, it is a hope for the future economy.
Many Altcoins will have a huge importance on crypto economy, but will never replace bitcoin.
I dont think so any other crypto replaced bitcoin and I think a lot of crypto have replaced by bitcoin so I think bitcoin is very stable and strong with high price in market and also there is a very big support to bitcoin by some rich countries so there is no chance of any other crypto to replace bitcoin and if there is any crypto in market so I think that crypto must be strong same like bitcoin and Im sure there is no crypto left in market to replaced bitcoin.