There is a much larger segment who could be pleased, but whom WotC are not pleasing. Simply ignoring that segment is a bad idea, especially if it's possible to please that group without also alienating the people who are currently pleased with the offering.
Ah, but those people who could be pleased will probably not be all pleased by the same thing. And there lies the crux of the matter - no one product (or product line, or product strategy) is going to please everyone, or even most, any more than one novel will please most readers of fiction all at once.
Gamer tastes in games are kind of like their tastes in pizza - everyone has their favorite combination of things they want to see that would please them, but in order to really and truly please everyone, everyone would need their own individual pizza. Otherwise, someone's putting up with something they feel is sub-optimal.
I am coming to the opinion that frequently it is our own inflexibility and unwillingness to accept the sub-optimal as still pretty good that's alienating us from things, more than what gets produced. This goes beyond gaming, by the way, to culture in general.