The Morgan market is tiny in the scheme of things.
Morgan dealers historically have been pretty small 'mom and pop' outfits and because of a fairly small used market, could probably afford to be very picky when it came to buying used cars for stock.
There would be no point in them buying cars that perhaps wouldn't be an easy sell because they couldn't afford to tie funds up long term, plus they probably didn't have the funds available or the space to display them.
With the cost to the dealers of buying new cars for stock I'd bet the appetite to buy outright used stock is non existent at the moment............
SOR has always been a low risk option for dealers, not just Morgan dealers.
As a serial Morgan buyer.....🤯.... I've dealt with dealers from yorkshire to the far end of cornwall and everywhere in between.