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.
Actually, this value cannot be used as a reference for comparison and competition because each coin has its own basic value, so the size of the value cannot be used as a benchmark in this case, even though both of them have very many fans now.