I can safely say without the Gov't shutting them down, that Stowe will be open. Too much money has been put into it already in planning, hiring, protocols, buying PPE and making infrastructure changes to help social distancing, etc that there's no way the company will just close it. Too many season passes sold, etc.
But again, it's all geared towards like 30-50% normal business... these ski areas cannot operate within COVID procedure parameters and get 75% or more of their normal visitations... the guest experience would be absolutely horrible. That's why reservations and such will work to control crowd levels so as to not degrade the experience to just waiting in lines to do everything from using the lift to getting inside to go to the bathrooms. I mean you're still waiting in lines everywhere, but hopefully not like 30 minutes or longer lines.
Personally I still think weather is going to dictate this to start a lot more than COVID. Pattern is not very favorable into December.