"Grim" and "Once Upon a Time" just aren't clicking for me either. They come off as over-produced versions of 90's SciFi Channel concepts.
I find Grim is pretty decent... I hate the Friday Night time slot for it. It seems a concept that will get better once the show goes forward. I definitely like it more than Once Upon a Time. Grim doesn't take itself too seriously, and manages to come off as something better than the average cop program. Though it does seem like something that would be on the WB in the 90's... sure... but I couldn't get into Once... I know it's a fantastically unbelievable concept, one they ripped from a comic book, but they handle it so deeply, darkly seriously that CGI Jiminey Crickets come off more CGI super imposed Alvin and the Chipmunks than Yoda-like. If the show managed to just be a little more playful, it wouldn't come off so... goofy. It's not even goofy in a camp way, it's just... weird. An unpleasant weird.
Still, it's not that "they don't make good TV anymore" so much as upward and downward swings in trends. It's hard to come up with something new... everything's been done so you're stuck with either a variation on a theme (in other words, something the same with a couple changes) or something that's too far out that it just can't find an audience... and that just makes everyone go back to something the same.
Once and Grim are both results of a premature belief that Twilight-ified Fairy Tales will be the next big thing. We got at least 2 bomb movies from that assumption... anyone remember the disastrous Little Red Riding Hood? I don't mean Hoodwinked 2... There are other shows in the works, including 2 versions of Beauty and the Beast (I can't tell if one's even going to be a remake of the 80's series). I don't know how Grim's doing... Once is somehow doing alright.
The other problem is sometimes you get a concept so strong that it works well for one season, then it Peters out. Everyone loved Heroes, until the second season. Even the writers couldn't think that far through. And let's not forget Prison Break. They really wrote themselves into a corner by having them break out the first season. Which brings me to another problem... the long running epic saga genre show. Sure, Lost managed to keep into production and reach a conclusion, albeit an unsatisfying screw you of a conclusion... but after a while, it was getting harder and harder for everyone to care about that kind of show because, unlike Lost, they never reached the ending... The Sarah Conner Chronicals, The Event, The Cape (which I thought was a misguided attempt to recapture the lightning in a bottle the first season of Heroes that came off a knockoff of Batman)... even My Name is Earl was unceremoniously pushed off the schedule due to politicking with Amy Pohler's vehicle, Parks and Rec (which is basically VR Troopers to The Office's Power Rangers). Other than Once, it seems that everything was starting to go back to being episodic (the one thing I like about Grim is how episodic the episodes are)... but then Fox is going back to the epic genre with Alcatraz and that other thing with Keifer Sutherland... I bet both won't finish the season, and will be replaced by Mobbed or something of equal out of touch 40 year old quality.
The only thing keeping television from being quality is competition television. I refuse to call it reality TV anymore... there's NO CALL for the Bachelor/Bachelorette to be popular again, I'm sorry... and we do NOT need all these American Idol type shows. Only a fist full of them even get to C listdom... Jennifer Hudson was lucky as heck, but there's some pitty there. Does anyone even know who won the last "The Voice?" And I really hate the fact Fox made a show about Flashmobs. No one does flashmobs anymore. That's like a 5 year old Rick Roll in the middle of October.