"Secondary market".

The OP described themselves as a layman but then said that they were in the industry. Assuming that the latter is true, I wonder if the OP knows of any full-service airline anywhere in the world that allows name changes on premium cabin long-haul tickets for a fee, whether it's £50 or any other figure. Also, IIRC non-transferability of tickets isn't a policy rooted in today's world of corporate greed, management bonuses and the like, but has been a standard feature of the industry since way back when.