hasn't this been the nature of ski towns for decades? they've always been tiny communities with transients and tourist booms and lots of rentals, resorts, cabins, etc.
Sure, ski towns have always been dependent on tourism. And the 5000 sq ft mountainside mansions have always been unaffordable for most people living there. But the difference is that there used to be affordable housing for the people who live and work there full time. Short-term rentals have massively changed the financial calculus.
Yep, there was the South Park episode from 2002 (Asspen) that does a shot of the housing development, and the sign for it says, "A time-share community." -- even then it was a long-recognized trend of how the ski towns turned out.