Listen if you don't like heavily developed areas then don't go to those areas. It's not like there aren't plenty of undeveloped areas you can go to. Sure they will have long, and possibly dangerous, access roads, slow lifts, bad food, surly employees (because they aren't getting paid squat). They won't have many entertainment or dining choices so if you have kids or non-skiing family members they can just sit and read a book. Sure the LCC and BCC areas are relatively undeveloped but that is a bit of a red herring. They are on federal land so they can't be developed per se. And they are 20 minutes from massive development and urban sprawl so they have a bit of a special circumstance. Taos is relatively undeveloped and has the pain in the ass access and slow, old lifts to prove it.
In general skiing in and of itself is not really an economically feasible business. It doesn't generate enough free cash flow to fund improvements, hell it can barely fund maintenance. So ski areas without some other economic base tend to develop very slowly if at all. If they are located near a major population base they may be able to be pretty successful and keep up with on mountain improvements (like Snowbird for instance) but if they out in the boonies like so much of our natural terrain then it is very hard without full resort and real estate development to make things work economically.
Deer Valley is what it is. The terrain is actually very, very good. But if it is not the experience you are looking for you have plenty of other options. And really if you think Park City is a bad place to live and ski you have some pretty different view of what makes a good, well rounded life.