Yeah if Apple considers desktop PCs to be obsolete and not worth keeping around, why not show some "courage" and just kill them off instead of letting them sit around like an unwanted, freeloading roommate? If they consider their desktops to be worth selling, they should at least bump the specs once in a while. They'd still make a killing, as new components often cost the same as or less than old ones, and they could keep their markups just as high as always. Doing so would maybe draw less ire from the small number of people who actually care about their desktop offerings.
I dunno, maybe they figure anyone who's stuck with them this long is never going to leave, so why bother trying to please them?