Thats one of those catch 22's... without new members and people to need help and resources to get started and stay motivated its hard to have a successful community. And with how large BB.com now is, its difficult to not also be affected by the marketing tactics of large companies, esp for the new-comer to the fitness realm. I would also guess that it is the case that a ton of people who shop there never see any other stores or products because they were GNC customers who found the first search result, the most popular/typical site name or just heard about it from another gym bro.
As far as concrete.... kre-alkalyn is still somehow out there and CEE is put into products, too. Not everyone is as educated as some of the people on these boards