well we cannot say that ethereum is the future of cryto and bitoins are not , ethereum and many alt coins were formed after the success of bitcoins , wehen bitcoins ose to $2000 , bitcoins now give a big amount of advantages . It has a bi community behind it that is supporting bitcoins , the number of users are also increasing day by day , this helps bitcoins to become more powerful .
but yes no one knows what is in future , ethereum has potential to come up but for them overpowering bitcoins would be like impossible .
The number of users of the bitcoin is not increasing as fast as it should be. The tranaction fee should be reduced further to attract more users.
The transaction fees of Bitcoin has decreased to normal, just by the value of Bitcoin makes you think this fees is high. If you do not want to waste your Bitcoin for pay fees, you can try use other altcoins in crypto world for replace it.