Do you think it's possible that the Bitcoin price will follow Ethereum price in the future? When Ethereum becomes proof of stake and becomes deflationary, can it happen?
Bitcoin doesn't follow any coins in the market no matter how high or potential it would be because everything would always matter with the demand and support of the community on bitcoin itself.
They can move on their own in terms of new updates or whatever the events that do happen but bitcoin doesn't really care at all. It would still remain to be the top crypto not only for few decades
but rather into the entire crypto market relevance and recognition. If you do believe about ETH potential then you can always opt to diversify instead.