There are notable exceptions. Majesco, EA, Firaxis, id (now id Mobile). Gamecock, BioWare, Traveler's Tales are put out or publish some great stuff. I'm still amazed Majesco's Age of Empire is my favorite strategy game on my DS.
There were some false starts in 2006 with a lot of PC devs who have seen their franchises displaced by FPS games looking at the DS as a possible platform for their games. A lot of noise were made but very little came of it. This is probably the start of a new phase for the DS, the amount of storied PC franchises headed to the DS is going to be very nice.
The europeans already got Anno and The Settlers franchises. We got Sim City, Orcs & Elves. Next year will see Populus, more id mobile titles, Spore, Civilization IV Revolutions, Myst (maybe?) and I'm sure im missing quite a few more.
The titles on my wishlist that hasn't made it to the DS are Masters of Orion, StarCraft / WarCraft and an all new Sim City game.