One problem of perpetual copyright, even limited perpetuity as in to death and slightly beyond, is that it allows for a work that could be very commercial, perhaps even needed by the market, to be un-copyable at the request of the rights holder.
Would someone be allowed to copy a work under a perpetual copyright if they did not profit monetarily from the work?
We would definitely run into some problems about what does it mean to profit? But that could be worked out I suppose.
