I will say this: The time off/paid time off situation here is remarkable compared to the U.S. Starting vacations of 5-6 weeks vs 2 weeks; lots of holidays (particularly in Catholic Bavaria!); companies generally required to make space for you to take your time off AND give you extra time off for accumulated over hours (or pay, or both, depending on job).
But I think it's a constellation of things. The biggest is probably resort strategy. Very few of the spots I'm skiing (and they can have massive vertical and terrain) seem built around affluence and real estate. That differs quite a bit from my experience in the U.S.... except for the mountain I learned at in Western Mass, which no longer exists.
But there are other factors. Infrastructure here seems less built up. I think patrol/control is thinner. On-mountain buildings are mostly simple, and most mountain areas are heavily trafficked in all seasons (hiking, staying in huts). And there's a very broad base (everyone seems to know how to skis pretty well), including lots of people who don't put in full days but likely buy full day tickets (since you can't usually buy a first-half of the day ticket, only late-start tickets).
Day trips to resorts up to 1.5 or 2+ hours away are reasonable too because of bus or train + lift ticket deals that end up costing ~10 more than lift ticket alone.