Wasn't LSL Sierra? Or by "them" do you mean the public? (ie. interest in point n click adventures).
There's been a few adventure games still released in recent years. The Runaway series did pretty well. Syberia 1&2 were pretty popular as well. The Whispered World wasn't bad either. There's also been some good fan made games. The unofficial Zak Mckraken sequel in particular looks quite nice.
While not as prominent a genre as it once was there's still a decent amount of new games. Perhaps one day ScummVM will support some of these more modern adventure games too
Personally I'm still wanting The Labyrinth to get support
Fantastic, seemingly little known LucasArts Adventure game based on the movie of the same name whose "script" was written by Douglas Adams.