I think the this will happen in anytime in the future! The real bitcoin as speak is always going to have more trust as compare to other coins and ETH specially. This trust will always keep building more and more investors and crypto enthusiast in the favour of bitcoin leading to ultimate investment into bitcoin. So you see here, the weightage for the bitcoin will be always higher as compared to the ETH. Im completely in favour with the ETH as good investment but it always comes after the BTC. Its perfect currency for long term investment but I don't think that anyone will ever put it in the first rank and that too after having blessed with BTC in the crypto world.