Most season pass sales are doing well as people are afraid day tickets may not be available on busy days and pass holders will get first dibs... so if you want to ski, the idea is buy a pass.
Also, all discount products are essentially gone in a lot of spots... you aren’t finding those gas station, supermarket discount tickets or random promotions, it’s either get a pass or buy full freight walk up tickets when capacity allows. Bus tour discounts are done this year... maybe in the past folks patched it together with various discount days to different ski areas, but that likely won’t be an option. There are definitely a variety of factors pushing people into passes this season.