I agree. All too often many writers get stuck in a rut and are no longer willing to take thematic risks with their fiction. You even see it from SF writers who should know better. Given that SF is by it's very nature a genre of ideas they should know better. Heck, I even know some of them personally.
All this is starting to manifest itself a bit in the closing of several Old Guard print SF/F magazines. I think in the long run this will be good for the industry, however. Magazines will have to modernize. I don't see as how that can be bad for either the publishing industry or writers in general...and it's nothing but a boon for readers who love the genre.