Maybe Paizo should secretly hire some Satanists to murder their parents for drug money and blame it on Pathfinder...
KIDDING!
I'm not so sure it would work that way again...
The term "role-playing" has been usurped by video games mostly (Final Fantasy, Worlds of Warcraft) fantasy worlds aren't so weird and unknowable (Eragon, Lord of the Rings) and "magic" isn't as spooky as it once was (M:TG, Harry Potter). And D&D has been around now 30+ years and we had a handful of alleged murders/suicides in the very beginning, then a lot of nothing. Heck, D&D is probably responsible for more kids getting their lunch money stolen than it is for any crazed murder-cults.
The mystery behind the game is gone. Its been disseminated into a thousand pop-culture references that most people would find childish and nerdy before spooky and dangerous. Hasbro produces the dang thing, its name has been on countless video games and CRPGS, and I don't even think Orcus on the cover bats much of an eyelash in a world with WoW CosPlay and Rowling becoming her own tax bracket off Harry Potter kids.
Long and short, for D&D to ever regain that stigma to anyone beyond the same fundamentalists that hate Halloween, Heavy Metal, and DOOM, you'd have to have a pretty spectacular event. I just don't see that happening again in the future without D&D getting lost in the mix of fantasy lit, video games, card games, and Norwegian Speed Metal bands...
... Unless they actually used the PHB to summon REAL demons. That would get everyone's attention in a real hurry...