ethereum is indeed very good to be an investment but there is still an unsolved problem of ethereum namely high costs. this is a matter that cannot be considered a trivial matter, even investors complain, project makers cannot send coins to investors and bounty hunters because the costs are very expensive so that it erodes the high enough costs to be incurred just for transfers.
many already want to change and look for alternatives in order to avoid high costs, so now many new projects have begun to shift to other platforms and have reduced entry to the ethereum platform. if this drags on then ethereum will be replaced with something else although it may be a bit difficult, but it can happen. so ethereum should focus on fixing the high fees and they will do it in july and we are waiting for this news.
but that bitcoin is still the best in crypto and until now cannot be replaced and it is not easy because the market cap difference between bitcoin and ethereum is very high.