yes i believe this that bitcoin will be replaced by another cryptocurrency but not this time, maybe in the future, people always invent new and innovative things, who knows. it will all depend on the features of the new crypto currency, it should be overall better than bitcoin to be able for it to replace bitcoin.
i've seen so damn many another cryptocurrency which have better and lot features compared to bitcoin but they're didn't live so long and even still alive the price is under bitcoin because bitcoin have popularity and have been used for being a payment processor in quite many big stores