[Perfectlap]

As far as Porsches go, collector cars are those with limited production engines (relative to today's production figures).
Unlike a collector car, only a very small % of Porsches have recouped their original sticker prices. Certainly when you consider just how expensive those cars were in their day with way higher interest rates.
To be a "collector Porsche" they can be NA or then can Turbo, just as long as they don't make tens of thousands of them a year.
Those days are firmly in Porsche's past. They'll sell 200K Porsches this year. Keep that up for five years and you're up to your eyeballs in Porsches.
Not enough buyers care whether they are NA or Turbo to "boost" prices above their original stickers.