XMR's USD peak was around the 500 USD mark when Bitcoin last mooned.
Back then, let's say that was roughly a 40th (or 2/5%) of the Bitcoin price. If this run 'season' plays out then a 50K BTC is far from difficult to imagine be end of 2021.
Monero making it to a four figure dollar sum is not outside the realms of possibility.
I certainly think an ATH is likely. 2 x ATH - why not?