If D&D was selling like it did before the edition wars, before Paizo essentially re-sold WotC's v3.5 rules under a new name (which Paizo admits because they needed it in print to support their bread and butter, Adventure Paths), these layoffs would not happen. But when Hasbro shuts down D&D, if the upcoming edition (they will not admit to using Monte Cook in an attempt to go back to something more like 3ed edition but different enough to call it 5th) does not meet sales quotas, then D&D will become an IP used only for video games, novels, and board games. Hasbro will never sell the IP because to sell it would be selling Drizzit.
And if that happens, Future Generations will never know D&D, only it's clones and retro refits. And that would be sad for gaming.