Let's say the MBP does average twice the price of the Air (and I could certainly buy that, especially if the $6000 ones are rare and the $1400 models compensate for them). I would have initially thought the price difference was even larger than that, but I had forgotten about the base models that use the same chip as the Air. They're fairly popular, and they drive the average selling price of the Pro down.
If that's the case, the Air sells more units, by about 3:2 or a little more (maybe 5:3), depending on the exact ratio of their selling prices. I live in a relatively well-off university town (Cambridge, MA), and that's what I see on the campuses and in the coffee shops - Airs over Pros by something less than 2:1. Yes, that's affected by a lot of students (who prefer Airs), but it's also both a relatively wealthy area and an engineering and biotech-heavy one, both of which might boost the Pro. The ratio "in the wild" is certainly closer to 3:2 or 5:3 in favor of the Air than it is to 5:4 in favor of the Pro, at least where I am (and when I happen to notice in other places while traveling).
The other thing dollar value does is that it makes the Mac Pro number a lot more reasonable. It would be a VERY unusual market if Mac Pro UNITS were outselling the much cheaper Mini, especially when the Mini gets used as a media machine (I know a couple of people who use them as glorified Apple TVs), as a home server, and in data centers. Yes, the Mac Pro gets some big contracts in Hollywood, and to a lesser extent in academic computer labs - but I have a very hard time seeing it outselling the Mini 3:1.
Account for a 10:1 or more difference in price, though, and it makes a lot more sense! It sells 1/3 what the Mini does, but at 10x the price...
No question that the Mac Studio is a flop, no matter how you slice the numbers. It sells a tiny number (no more than a couple of hundred thousand units annually), even if it's by units, and somewhat less than that (the average selling price isn't THAT high, because of base M(n) Max models) if it's in dollars.
Apple sells about 20 million Macs a year (this figure varies quite a bit year by year, but it's in the ballpark), meaning that 1% of unit sales is about 200,000 Macs.
If the chart is in units, you end up with something like (very roughly):
10.2 Million MacBook Pros
8 Million MacBook Airs
800,000 iMacs
600,000 Mac Pros
200,000 Mac minis
200,000 Mac Studios.
Those 600,000 Mac Pros don't pass the sniff test to me (and the Air to Pro ratio feels wrong, but not wildly out of whack - the Air to Pro ratio could simply be that I live in an Air-filled college town).
If it's in dollars, we're closer to (even rougher, because actual average selling prices are probably unknown outside of Apple Park):
11 Million MacBook Airs
7 Million MacBook Pros
1.1 Million iMacs
600,000 Mac minis (at very low average prices)
150,000 Mac Pros (at very high average prices)
150,000 Mac Studios
That feels a lot better to me. If they're really selling over half a million Mac Pros annually at ~$10,000 apiece, that's a BIG business (something like $5 billion/yr), and even Apple can't ignore a $5 billion business.
The other interesting figure I found while looking this up is that Statista says that there are about 12 million mobile workstations sold annually (using a generous definition of "workstation", because IDC says there are only 8 million workstations sold annually, mobile and desktop combined - maybe 4-5 million are mobile????). Either way, the MacBook Pro sells something on the order of all other mobile workstations COMBINED. I suspect that every MacBook Pro qualifies under Statista's loose definition (with the possible exception of some base-chip models). By the tighter IDC definition, the base chips almost certainly don't qualify.
