Reef
Hero
I'm sorry, but it's just starting to sound like you are unhappy that they're not catering to your wants specifically.Funny. You can give people more than one thing, and you don't have cater exclusively to the most popular options.
You can deliver more than one thing, but there's only so much time any company (even the one the size of WoTC) can devote. So, given the choices, of course they are going to spend the work hours on the options which will make the largest portion of their base happy. If their numbers showed that Psionics (or whatever else you are looking for) were popular with enough of their customers, they would be doing that. To do otherwise would be crazy. They aren't doing this just to spite the Psionics fans.
And yeah, publicly traded companies come with extra complications. But even a small one or two person rpg house are going to maximize their work on what will give them the biggest boost.