I'm sure I'll surprise nobody when I say that I fully agree with Stan! In fact, I've said as much here in the past.
Here's what bothers me about this. When WotC was trying to be the good shepherd for the industry, they still dominated the market. The philosophy was that anything that was good for gaming was in turn good for D&D, which was also good for WotC. Sure, things slowed down towards the end of 3.5, which is to be expected (keeping in mind of course that D&D in its slowed down form still would have been considered a smashing success by any gaming company other than Hasbro).
As Stan! notes, somewhere the philosophy changed. I don't know exactly when it happened (probably shortly before I left), but the new WotC disturbs me. I still see many of the same creative people working on stuff, and I know they're good people, but the things that are being done of the business end show a disregard for the people who have come to rely on them for certain things. The GSL (particularly the first version), pulling the PDFs, cancelling Dragon and Dungeon out from under Paizo... these things affected people who in whole or in part based their businesses around WotC's responsible leadership.
Was WotC contractually oligated to keep doing these things? No, clearly not. They were within their rights to halt themagazines, pull the PDFs and make a new license for the new game. Is what they're doing substandard? Again, no. They can manage their content however they want.
Is what they're doing ethically wrong? You can make an argument either way on this. I'm not a fan of how they yanked the rug out from under Paizo, but again, the contract ran out and they made a decision. Paizo decided to soldier on and seems to be doing OK, maybe even great, but I'm sure that this was not an easy transition for them. Does WotC owe people unlimited access to unprotected PDFs? No, not really, but there are a number of people who took advantage of the format and have integrated it into their gaming experience. This is leaving them with one less tool to work with, which is a disappointment that is real.
The point here isn't that what WotC is doing is wrong, but that it's not as open and friendly as what we've become accustomed to. There are a number of companies that are still open and friendly, and I think that's what it means to be an industry leader. The leaders I see are Paizo, Mongoose, and Green Ronin, with an honorable mention going to Goodman Games.
Paizo is providing leadership by continuing to provide great game content for an edition that many people continue to embrace, and by offering a compatability license to anyone who wants to publish material for their new version of D&D.
Green Ronin is providing leadership by providing real feedback on what's happening in the industry that is only lightly filtered, making compatability licenses available for M&M and True20, and for modifying their catalog of truly awesome previously available titles so that people can still buy them.
Mongoose... what can I say about Mongoose? When they first appeared on the scene I was critical of them because of the sheer quantity of product they were producing. Despite my misgivings, I kept following their stuff and buying the occasional product, and coming away with the impression that it's not half bad. In the years since they've taken what was a small publishing company and done some really amazing and wonderful things. Babylon 5, Conan, Judge Dredd, Lone Wolf, and more, all great stuff. And, leadership wise, they're all about being an industry leader with their Flaming Cobra line. The sole intention of Flaming Cobra is to share resources with smaller publishers, elevating by a considerable amount what would be possible (but difficult) to achieve without their help.
These are strong examples of leadership.
The one area where I think WotC is still acting as a leader is appealing to the casual gamer, getting them into game stores and buying stuff, thereby increasing the overall health of the brick and mortar stores. For the longest time the reports I'd been hearing about 4E were negative. A lot of people weren't enjoying it, people weren't playing it, and it wasn't helping anyone. Recently I've been hearing reports that 4E is in fact drawing in new players and a lot of lapsed players. This may not benefit me directly since it isn't one of my games of choice, but anything that grows the hobby as a whole is positive.