I wasn't suggesting all manufacturing limit their systems either, my point is that if you believe the reason Tesla is limiting the system to the speed limit because they don't want the system to break the law, then they would have also nerfed all their systems - why would they have an issue with one of their systems breaking the law but have no issue with their other systems breaking the law? TACC (without autopilot engaged) has no speed limit restrictions (under 90 mph) yet travels through the same intersections.
My point is that they are not limiting the speed because of liability issues but it has more to do with other concerns they may have.
As it is, I rarely use auto pilot off the freeways as 5 mph above the speed limit is so much slower than the rest of traffic, and compounded by the issue of how many times the database speed limits are slower than the posted speed limits (especially in L.A. where speed limits are adjusted regularly on streets). I have no interest in trying out the system at the speed limit (I have also driven 31.95 miles for the month of April so don't when I will be driving again). Once it is SAE Level 4/5 and I can be working on my laptop while the car is driving me, then I will not care if I am holding everyone else up.