First off, who is talking about one souvenir share of stock? What about those that have several hundred to several thousand? We used to get discounts via the Magic Kingdom Club, which was discontinued.
And it remains, DVCers have no actual stake in the company, like stockholders. If the company folds, stockholders are out money, DVCers will still have their deeded resorts, operating under a different company like Marriott or Hilton.
Locals kept Disney operating after 9/11, more so than DVCers, many of whom were terrified to travel for a while. Remember, Disney had to halt construction on Pop Century for a couple years, and they didn't finish and rechristen the other half of the resort to Art of Animation until 10 years later because of the downturn in domestic tourism..
The lounges are designed to make a statement in the parks, getting people interested, having non-members see perceived benefits. Basically, they are subliminal marketing. Sodas and snacks don't cost much, but they are a nice respite from the heat and crowds. and the locations would be otherwise unused or non-profitable for Disney. This way the space is rented by DVD/
DVC Marketing. If the shooting gallery were profitable, it would not have been removed. If the 2nd floor of the Imagination Pavilion wasn't converted to a lounge, it would be still sitting there deteriorating, or used for office space, as neat as the rainbow walkway used to be.
Would additional DVC perks be nice...sure....absolutely. I can think of a couple perk expansions I'd like for MMB, like extending the PhotoPass benefit to include Annual Passholders for the length of their pass, or at least a discount. Also ticket discounts for those staying in your room, or a "Traveling With" room, whether living in the same household or not. But they are not owed to us. And the bottom line is still, unless DVD thinks such perks will boost direct sales, don't expect to ever see them.