i disagree with the OP that having too many products will promote identity death. PRS believes in
innovation or death and THAT is their identity. They are constantly trying new things, as evidenced by the myriad models available, but if something doesn't sell it is gone.
We PRS oldtimers can tell you that for each of the models you list there are two models or configurations that no longer exist. And several of the models are just tweaks to previous editions. For instance, the Studio used to be around in the early 2010s, then went away (unfortunately), but recently came back with tweaks, while ME has had five iterations, with the current one having multiple options for body and neck combinations.
Gibson's identity was to make some really good guitars and then rest on the laurels of those guitars while letting the quality suffer in a massive way. I think it's cute how Gibson is finally getting around to making a guitar honoring Ted McCarty (the Theodore).
I truly believe PRSh stays up late every night trying to come up with pickup/wood/switching/scale combinations that have a niche in my sonic palette because he knows that I would rather buy a new tool than learn to actually play guitar.