I think they should include Apple Care for their professional equipment. This won't put any any more money in Apple's pocket but I could see it being another differentiator and a good bit of PR, especially to all of those price arguments. Plus, it's only $300 and I'm sure Apple could suffer that "loss" on a $6,000 - $30,000 purchase.
The first Apple computers I bought lasted for years and I never thought Apple Care was necessary, but since the fiasco with the 2011 MBP and the butterfly keyboards I'm not buying another of its products without Apple Care. Yes, Apple ended up doing the right thing in both cases but it took years after the problems started and a couple of class action lawsuits.