I have been saying the same thing for a long time. The problem with making a good M/C tire in a round shape with car tire tread and rubber is that it would work too good and last too long and the M/C tire manufactureres would lose $$ big time
I agree to a point with you. The issue as I see it would be a harder compound [like car tire] combined with an MC tires much smaller contact patch would make for a potentially dangerous tendency to slip/slide much easier. Also a CT like tread pattern would have an incredible tendency to cup horrifically, well beyond what we sometimes see with MC tires.
Some CT users prefer a soft compound [around a 300 tread wear rating] CT, but only get 7-8k miles from them.
I prefer the GoodYear Triple Tread [35-6#'s] with a 720 tread wear rating and an 80k mile tire and hope to get 30k+ from it on the bike.
It also sticks like a son-bitch whilst dragging pegs. Mine is matched with an E3 front and I've experienced no front or rear slippage at 25-50 mph over posted curve speeds.
Frankly, I don't understand going to a soft CT that needs to be changed out as often as an MC tire. Other then lifting the bike ever so slightly when healed over there seems to be no advantage otherwise and the "bumpsteer" trade-off, IMO, isn't worth it. OK, well maybe the menacing appearance of it is.
On the lighter side:
A few months ago I came out of a 50 mph sweeper [with the GoodYear] look'n like an 07/04 sparkler at 95 mph, with a cigarette and a beer

, into the lap of an oncoming sheriff. Thankfully, he only waved his forefinger at me (maybe he was a rider too). If he hadn't, I would of just pulled over and waited for him to get turned around.
