Its marketcap couldn't surpass Bitcoin at the time it hit that ATH simply because it's total supply is 36,666 while Bitcoin stood at a whopping 21 million (when compared to YFI). At a point, because of what the YFI token achieved within a short time, developers of new projects at the time had to add the "YF" tags to their projects, the same way a lot did with "Shiba" and "Inu" when Shiba Inu became a hit. Well, on YFI; I believe that it's going to stay a lot longer on the scene. It's not going to be a flop like many projects before and after it. It sits currently at $31k plus, slightly around $15k less than what Bitcoin price is today. That's a good thing. It still shows strength.