In SoCal, they're out there, they're just not coming out.
I suspect that it is the same in other parts of the country.
There seems to be a mysterious cycle where a particular
type of vehicle will be the hot ticket for a nondescript
# of years and then without notice they sort of disappear
until the next cycle comes around. Maybe a 6 or 7 year
cycle.
When the '09 CTS-V's rolled off the showroom floors they
were the hot set-up for about 7 years, now nobody so
much as even pays them any attention.
My guess is that the Mopars will be the marque for
about the same # of years.
And the beat goes on.................
The re-birth of popularity of these turbo Buicks no
longer attracts the younger generation.
They will never go away entirely, but they will
go into hiding & mothballs more frequently as
newer generations of super high performance
vehicles show up on the market.