I'm not a rabid "fly anywhere" person, I do respect the Utah laws about flying over private property, but those laws are hardly ever if never enforced, according to LEOs I've spoken with who specialize in drones. A property can't just declare itself a no-fly zone.
If the entire property is fenced with no trespassing signs, then you can make an argument based on the never enforced laws that people can't fly over this property. Is the ski resort fenced and posted?
Also, is Deer Valley really private property? Aren't ski resorts usually on a lease with the Forest Service?
Having said that, here's the FAA view of this airspace: no restriction except the dark brown wilderness areas, and be aware when flying in or near the blue paths of other aircraft.
Finally, there's no distinction between recreational and commercial (part 107) flights, if the airspace allows a flight, you can fly it.
Obviously this all assumes taking off from some neutral (probably USFS) property. Or somewhere in town.
This is funny, here's their "no-fly zones" and it says "these are not legally binding" in the caption
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