Ethereum has been use widely for ICO purchase which have given this coin a high recognition. And also ripple has been on test for her technology in financial institutions to use since it can process trasactions than bitcoin. Will these two coins replace bitcoin and become number 1 on the coinmarketcap
I don't think some coins will replace Bitcoin. they will only be subordinates to bitcoin and are in a position under bitcoin. indeed the coin has good potential, but it's still difficult to replace bitcoin.