If Disney pays Mears a set contract price based on previous valet traffic, Mears can provide valet service at a fraction of the cost today.
You're making a pretty big assumption on the nature of the relationship between Disney and the parking vendor. I can't imagine why Disney would pay the a vendor to operate a revenue-generating operation on Disney property. That business model makes no sense.
More likely, either the vendor is paying a fixed fee for the rights to operate the valet parking service or the revenue is shared by both the service provider and Disney according to a pre-determined schedule.
Certainly Disney (not
DVC) has a great deal to lose here. That fact alone leads me to question exactly how much say they have in the ability to provide free or even discounted valet services to DVC members.
Disney does surrender some control when they allow outside vendors to operate on property. Look at things like the Dining Plans and Tables in Wonderland. Disney cannot obligate restaurants like Raglan Road or Yak & Yeti to participate in either of these programs. Ultimately each establishment decides whether to participate in the discount dining programs or not. Similarly, Disney cannot compel the valet parking outfit to provide free or reduced-cost service to DVC members.
One would believe that Disney/DVC would have already run the financial projections before deciding not to continue the funding, and likely they didn't show a projected significant drop off in dining revenue. Disney makes very few decisions without looking at the finances.
Not only that but they have years worth of data on valet parking usage at non-DVC resorts like the Poly, Grand Floridian & Yacht Club, plus AKL and Contemporary where free DVC parking was just added months ago.
At worst they may have underestimated the volume of DVC members who are willing to pay for valet. But it will take months to evaluate even that statistic as member patterns are certain to change in the coming months.
They are member benefits & they make your vacations more enjoyable. By continuing to "tweak" them or take them away does not make members happy.
Bear in mind that many members are also budget conscious. Losing benefits appears to be what lowers your satisfaction level but there are thousands of other members whose satisfaction is driven by their annual dues bill. Go back 3 or 4 years in the forum archive and see how many people were up-in-arms over the OKW pool slide they are now obligated to staff and maintain.
DVC has to strike a balance between cost, benefit and appropriateness of any perk offered to members. Some of the decisions are certainly difficult and even unpopular. But that doesn't make the decisions wrong by an objective measure.
And again, I know I can pay out of pocket for valet, but if I'm going to pay additional for something that was once a "free" perk that I used why doesn't someone else have to pay to rent a DVD player if they are going to watch a movie - I don't need that DVD player in my unit. (just a small example)
There may eventually come a day when DVD players and free movie rentals are not available. But don't overlook the cost component of the item being discussed. DVD players probably cost Disney $20 when purchased in bulk. A single player could last for months or years in a villa room. The DVDs themselves run about $20-30 (perhaps much less since all they stock are Disney products.) A resort's DVD procurement budget is probably in the neighborhood of $400-500 per year.
Compare that to valet parking which is $12 per guest, per day. Pretty big difference, financially speaking.