No, 3e was a very successful game because it allowed OTHER people to focus on adventure and setting. There are many settings, ranging from Arcanis to Iron Kingdoms to Arcana Evolved to Scarred Lands, to ones offs like Call of Cthulhu, Dragonlords of Melnibone, and dozens of others like Nymae, that it allowed WoTC to make rules.
.
Agreed. I didn't play FR or Eberron during 3E...but I collected several of the books. The fact that other companies produced Midnight, Swashbuckling Adventures, Dragonlance 3E, Scarred Lands, Oathbound and others gave me settings that I liked, and more reason to buy D&D books, to support playing in those settings.
I haven't really found WotC to be on top of their game, setting wise, since 2nd Ed. (when it was TSR). Dark Sun, Planescape, Birthright, Al-Qadim, all cool settings that I loved. I actually spent much of the life of 3E using core books and class supplements etc. and running 3E adapted material in Planescape, since there was nothing comparable being released.
If there'd been no OGL or D20 license, and WotC *still* didn't produce much in the way of settings and adventures, and no 3rd party companies were doing so, I doubt I would have got into 3E nearly as extensively as I did.
Contrary to what WotC seems to have had as a mantra, there were other things more important to me as a customer than the holy grail of perfectly balanced encounters and characters. I'm much more interested in cool settings, interesting adventures etc. than I am in mechanics that are "perfect".
I'm now in my 30's, and just don't have time to have a core book set, and create my own setting etc. I did in my teens....but now? I appreciate a cool setting, and adventures that let me just focus on getting together with friends and playing a cool game, rather than spending all my evenings putting together encounters, and trying to think up new storylines.
Banshee