Yes it is very common because now a days some altcoins have more potentiality for this reason it is very simple to overtake bitcoin. Many of us hard the name of YFI coin. The coin highest price is approximate $44000 and now $32000. Already altcoin overtake bitcoin.
To overtake bitcoin in price, especially for a short time, is not all. Bitcoin as a whole has stopped in development and it is likely that altcoins will soon overtake it. Here, first of all, you need to assess the level of capitalization. In this, bitcoin has no equal yet. However, things can change very quickly. Here it is hardly possible to predict in advance who can replace Bitcoin. Most likely, this situation with rigid price dominance will no longer exist.
As for the YFI token, it will not compete with Bitcoin, even despite its current high price. She is in this token temporarily.