This is the same issue that's already happened all over the US. Beverly Hills, Malibu, the Hamptons etc... You have to
pay people more to work there so they can afford their commute (and so commuting is worth their while). Some stores in the Hamptons have busses/vans that bus their employees into work because they can't find locals willing to work.
Plenty of affordable housing within 45 minutes of Park City. If you pay enough, people will make the commute.