Your rant doesn't make a lot of sense, and ignores some Porsche facts. For instance, the 928 in no way shape or form saved Porsche from being bought out. in the 80s, the 944 pulled their fat from the fire, and in the 90s the next generation entry level model did it - the Boxster.
Also, Porsche stopped doing number designations in the 80s, preferring to go with names. The 911 was renamed the Carrera in '84 - people just continued to call it the 911. The Boxster was the first all-new model since that choice to come out, and that's why it's known by it's name rather than type designation - they didn't bother coming up with a name for the 944 (and it's derivative the 968) or the 928 because they were on the road to discontinuation already. Since then it's been Carrera, Cayman, Cayenne - I don't think they'd though of the alliteration thing when they named the Boxster.
Lastly, my personal feeling is that the 928 should have been positioned as a limited-edition flag-ship model once the company realized they weren't replacing the 911. As you said, the flagship cars get people into the dealerships, where they buy the models they can actually afford and leave the supercars for the heavy hitters, like the Carrera GT does today.
This also lets them justify continuing to develop the line as a research platform, letting technology trickle down to the other models over time. This was already happening with the 928 - it's air intake and Bosche DME injection worked it's way into the 3.2L Carrera, it's Weissach axle was the basis for the 993 suspension and continues with the 996/997 cars, and the 4-valve technology used in the current flat six was pioneered in the 928 - it's engine design was also copied in miniature for the 944 and 968 throughout it's life.
Anyway, the smart thing would have been to limit production of the 928, keeping demand up while helping to defray the development costs of technology going into the lesser models. Selling 2000 cars a year is a disaster - unless you only planned to sell 2000

. It also would have kept prices up, which (perhaps perversely) would have increased demand; more high-end car buyers would have bought them if they hadn't made such poor investments. The Ferrari supercar sales model is to build one fewer than they think they can sell - and it works.
Emanuel