The best thing that WotC can do for the health of the game is grow the player-base. While they have had several initiatives that show them also trying to maximize the revenue they generate off their players, they have also done a great job attracting new player and providing products that help on-board players to become enfranchised.
I think that the closest corollary in the tech world is Apple under Tim Cook. They maximized revenue by expanding offerings and having a diversified suite of products, none of which were targeted at all consumers. For some reason, enfranchised MtG players think they have to buy everything WotC makes, and I think this leads to product fatigue. Players blame WotC, but they are just trying to offer something for everyone.