I missed this thread the first go-around, and sorry I did.
I believe Aaron Brill accurate to say (assuming he wrote the blurb on Silverton's website, and it sure looks like his writing) that ski area consolidation has made it tougher to attract skiers to Silverton. It used to be that season passes were sold to lock in locals, now the game is to lock in destination skiers too. That isn't just a Vail game, as Coleman's little empire of Purgatory, Snowbowl, Sipapu, Pajarito, and Hesperus are in his backyard. I haven't skied Silverton the past 2 seasons. Why? Because Silvy hasn't offered the dirt-cheap unguided pass and I have zero interest in guided skiing there.
I don't buy the argument that Vail has been why unguided skiing has been cut way back (contrary to statements in this thread, there is still unguided skiing at Silverton late season). Back when Silverton offered $200 unguided passes that included 15 days of skiing other places, I know a lot of people bought passes that they never used at Silverton, or they used 1 time. What did Silverton have to pay to other ski areas to offer that deal? I suspect they didn't pay much at all if anything, that is usually how partner benefits between unaffiliated ski areas work- you give our passholders this, we give yours that...
I also suspect lots of partner places felt they lost out on those deals, which is why the partners changed each year. Without good partners, Brill is left selling unguided passes to the 500 people that live in Silverton.
The reality? Unguided days at Silverton are pretty damned deserted, no matter how many passes got sold. Why? The absolute remoteness, coupled with unguided being a victim of Silverton's marketing. They market the place as GNAR HEAVEN. I recommend to anyone that will listen to ski Silverton on an unguided day over a guided. You will get a lot more skiing in and ski what you want to ski instead of being marched out past great lines to farm snow. I don't know any non-local that I have given that advice to that has taken it, probably because the idea of Silverton, reinforced by their marketing, scares the hell out of them. Silverton has absolutely no motivation to make unguided skiing appealing, because guided skiing makes money, and people come for guided skiing because of the mystique.
Vail and Brill are two sides to the same coin. They are both selling a certain image and mystique. With Vail it is the back bowls, the perfect groom, the perfect family vacation. Disneyland on snow at Disneyland prices. Brill/Silverton is selling STEEP AND DEEP BACKCOUNTRY OFF THE LIFT BRAH. Both Vail and Brill largely give you what they sell as their image, what they both leave off is that their experience isn't unique, and you may find better elsewhere for less.
Is Silverton everything it is cooked up to be? Kinda. The terrain is great and none of it is easy, but if you can ski a long 35* run at your ski area, you can ski Silverton. Lots of Silverton terrain is like Pali at A-Basin. But Pali is an hour from Denver, and Silverton is almost 7. Or, you can pay a lot less than unguided for an Aspen ticket, hike Highlands Bowl, and ski HB/temerity all day. if it has snowed recently, powder competition may be better at Silvy, but still in the same universe. Silverton offers a lot of more technical couloirs and cliffs, but a tiny percentage of people even coming to ski Silverton ever actually get on it. I'd bet that stuff gets skied more often by locals on unguided days than during guided season by paying guests.
Brill is cutting back unguided skiing because they have no interest in offering unguided skiing. Frankly, they don't actually want people to feel they can approach Silverton Mountain solo with confidence, that undercuts the marketing that draws destination guided skiers. They haven't been able to attract unguided skiers from out of the area through their pass, and they probably doubly hate when a season passholder with a partner area comes out and uses the day and they don't see the revenue. If it loses money and undercuts the mystique, why do it?
TL/DR- Brill is cutting back unguided season because there isn't enough local residents to make it pay, and it undercuts the marketing that sells guided skiing and heli drops. He is losing local support by having a ski area they can't access, and so is scapegoating Vail as the reason he is cutting back the days that locals can access the mountain.