I'm ok with saying it can't be sold. Note that a lot of writers, for example, don't sell copyright outright. They instead license somebody to be, say, the US hardback and paperback publisher for their work.
A lifetime standard is only as capricious as life itself. Given that the laws are made to serve human needs, I'm ok with it drawing a distinction between serving living ones and dead ones.
What is individual copyright? It becomes debased if you are saying it cannot be sold to corporations. Lifetime is a ridiculous capricious standard.