Ethereum does not have any brighter future than bitcoin. Bitcoin moves down, ethereum goes with it, that is how the market is been. ethereum is a fantastic smart contract platform but BTC will remain the leader.
it will remain the leader as long as eth has nothing conceptual and unique to offer the world.
when the pos era comes in we'll meet eth on the all time highs (in terms of market capitalization of course)
meanwhile bitcoin has no updates and 11 year old technologies can't be called useful you should understand that