I'd say no, because only a really small percentage of their income is from that market. ...
The iMac and Macbooks are way more popular that the Mac Pro, so they have to be careful about what they release.
The problem isn't overall sales / profitability, they've got that worked out pretty well.
The problem is effectively telling their customers, "We've totally got your back, as a supplier of computers to fit all your demanding needs... up to a certain point. After that, get bent, and go use Windows or Linux or something, because we don't care about you then."
But even for a large pool of users who think they might eventually have such needs, but never end up needing it, having an all-Apple upgrade path in front of them gives them the security to buy that mid-level Apple machine today. Having no workable upgrade path beyond an all-in-one filled with laptop-class parts is frustrating and worrisome.
Remember, everyone likes to quote the "can't innovate my ass" line, while laughing at the current Mac Pro, but that was said at an unveiling coming as an answer to the
previous neglected Mac Pro. They made a world-class pro machine, the "cheese grater" Mac Pro, and then they didn't stay aggressive on upgrading it, and people worried for a long time, so they went in their secret cave and created the cylindrical Mac Pro, which was an amazing start, and then they... ... ... nothing. They let that one wither on the vine too.
The cylindrical Mac Pro is an amazing design, and should be put in an art museum, but it fails on all sorts of practicality points that the old cheese grater totally had covered. They let pride get in the way and showed off how well they could design... a work of art. But not a practical pro-level machine. There's a scene in Ocean's Eleven, where Rusty (Brad Pitt's character) is trying to teach a roomful of idiots how to play poker, and one of the idiots lays down his cards with a flourish, proudly announcing, "All
REDS!" And gets congratulated by all the other idiots. Doing a great job of totally not the thing that's needed/important/relevant, and feeling he "totally nailed it". Remind you of anyone's ass innovations?
Apple set out to make a machine for people with "professional" needs, for those extreme edge/corner cases, demanding uses (ones not adequately served by their existing standard Mac lines), and their target market had a checklist that started out with, "Power/speed. Capability. Expandability." And Apple somehow came away from that focus group with a checklist that started with, "Innovative/sleek. Small. Quiet." And built a machine that... not only couldn't the customers expand it, but
even Apple couldn't figure out how to upgrade it. So it died on the vine.
AGAIN. The target market didn't ask for the machine to be tiny and round. Those were odd design choices that Apple made. If they'd kept at it and made improved versions (setting aside the utter lack of expandability for a moment), then they might have gotten away with it. But it didn't play out like that, and Apple didn't even try to keep the machine relevant, much less cutting-edge. Instead, no matter how
pretty the "current" Mac Pro is, it's a complete failure on the axes that are important
to the intended users.
(Apple could have come out
a couple years ago and said, "sorry, we screwed up by releasing a shiny new unexpandable Mac Pro that maxed out its thermal envelope on the first day - here's a recycled cheese grater Mac Pro chassis with the latest/greatest CPUs, graphics cards, and I/O ports", and the pro users would have sang their praises. But Apple was apparently more concerned with image and artistry than with meeting the customer's needs.)
I'd like to see Apple once again make a machine perfectly aimed at the high end - even if I don't need one right now - so I know that it's there if/when I do. (I'd also like them to make the mythical xMac - one step up from the Mac Mini, a small headless desktop box with a decent cpu/gpu and
easy-open doors for upgrading the ram, storage, etc. - but I don't really believe in fairy tales any more.)