Sure, there's a lot of shallow, mass produced corporate garbage in the world, but just because something is corporate/mainstream/whatever does not mean its devoid of value.
Agreed 99.9%...ok...100%!
If 4E dies out, there will be big problems for the entire PnP industry.
I don't think so.
IMHO, the RPG hobby has reached a critical mass of popularity, esp. if you include those who play the computerized simulations of RPGs. Even without 4Ed, there will be a large gaming hobby, both pen & paper and online.
...one day their campaign will end, and they'll look for something new. They'll go to 4e.
I don't think so.
Any game has flaws & quirks, and for some, those will be enough to drive them away. There are many people who didn't convert to 2Ed. Ditto 3.X. Some still play their favorite D&D systems, others gravitated to the RPGs of other companies- WoD, Ars Magica, GURPS, HERO, etc.
I, for one, am more ambivalent about the change to 4Ed than any previous D&D edition change, and really,
really like 3.5 (its my 3rd favorite system). At this point, I'm not sure I'll change over (even though I've preordered my 4Ed Core books), though its possible I may adopt some of the changes as HRs.
And the guys I currently game with haven't updated to 3.5...that's right- we're still playing 3Ed.
Simply put, for many people, 4Ed will never be D&D.
But perhaps, 5th or 6th or 10th will be...