Aftermarket being the way to go is a WILD statement after being around aftermarket turbos and factory turbos. There is absolutely no comparison IMO. Add a can to a factory system and you get rid of most of the additional weight (vs aftermarket).
I think the pricing will sort itself out here. We went from HIGH demand, low supply, low interest, everyone had extra cash to the opposite of all those things real fast. People are taking huge losses on pretty much anything they bought the last 4-5 years. There has been some hesitancy to buy used factory turbos, but that should wane. The systems and motors are good, and longevity should be there. Most of the issues have been sorted out and are easy fixes.
New prices need to come down and I think they will, unless of course inflation picks back up.
I do agree to some extent what you are getting at that adding a turbo to the Cat won't be enough to get people to jump ship... But at the same time, I think there are enough people who get bored riding the same brand but refuse to go so far backwards power wise. The Catalyst is attractive in alot of ways, but I don't know a single person who has gone factory turbo that would go back to NA (not ALWAYS the case, I know, I know).