Why aren’t there any lifting-canard airliners?
Sean I have no idea where you got the idea that the horizontal tail on a conventional aircraft lifts up, like a canard surface but at the opposite end, and can therefore stall and let the nose rise.  It's exactly backwards.

The tail lifts down.  When the airplane stalls, the center of lift of the main wing shifts sharply aft creating a strong nose down pitching moment that the horizontal tail lacks authority to counteract until the plane speeds up, and the nose drops.  If the down lifting tail surface itself stalls, that is a disastrous situation and is abnormal for any aircraft.

Canards generally suck because they have a host of limitations that negate most of the theoretical benefits and that's why they have been commercial failures. Otherwise, you'd see lots of them.