Not so fast. Track lighting is vulnerable to over lamping.
The design you've described throttles the juice without popping the breaker.
HQ (Starbucks) realizes that they can't stop the field troops from over lamping this or that specific track within their track lighting.
Thus, the design saves the track rails and stops the lamps from cooking the over all backbone.
This vulnerablity is pretty much unique to track lighting and other rail based systems.
The protection was probably throw in only after melt downs in other locations. (You can't cure stupid.)
And, obviously, having the lamps cut out during the work day would be a sales downer.
The last Starbucks I saw (inside a Safeway) had a sub-panel right out there on the floor. It was ordinarily kept under lock and key. So you can imagine the practical troubles if the breakers tripped and the boss man was not there with the key.
