How long until this happens?
Well, nothing is impossible here on crypto world but talking about this possibility then it would really be on near-impossible chance to happen.
Lets say bitcoin can really be replaced anytime soon into its peak spot but it would really be taking or need to get those whom support it mainly since this is the father of all
cryptos and altcoins would really be just an alternative no matter what.
OVertaking bitcoin marketcap is nearly an impossible thing unless if people will switch up to ETH in full scale specially on other alts supporters then it might be
but we know that this would be impossible.