I think $4K is still very far compared to the current bitcoin price of $45K, of course etherem can't compete with BTC, let alone take over the popularity of BTC, because BTC is a priority investment by everyone.
We are able to reach that price though the market corrects right away along with Bitcoin.
ETH is a good coin but it will never replace Bitcoin on top so don’t expect for this one and better to have your own BTC and WTH because these two will make this market great. There’s a lot more good news to come with ETH, if they are able to address the fees as well, expect an expensive ETH.