For me the answer is obvious. Bitcoin is a more reliable value. This is happening even now. In the long run it will be even more pronounced. The mechanism of inflation underlying the Ethereum will never allow him to become promising in the long term. He's probably already reached my limit.
I'm agree with you bro, bitcoin is the first cryptocurrency online investment so most of the investor will go for the trusted. Bitcoin runs more than 5 years so why we think that ethereum can defeat bitcoin in terms of investing that we know even 10 years from now bitcoin will be famous and number 1 in online investment.