possible? yeah, sure.
realistic? nah... at least not in this generation.. we are full of shitcoins.
ETH already made too much mistakes(and proved to be too centralized) to be bigger than bitcoin. maybe someday we find something suitable to the #1 place.
yes agree, lots of shitcoins, but few are really interesting, like Golem, the idea is very nice, wonder how they will succeed to accomplish it