It makes sense since Macs seem to cost 50% for the same equipment. A PC for $700 and a Mac for $1100.
I don't think the price difference is anywhere near that extreme, for similarly equipped systems. No one else seems to be able to match the Macbook Air price/performance ratio. I could look up analysis if I cared to, but I don't. Your numbers are made up.
But, I totally agree, they do sell their stuff at a premium, because they can. What matters more is that they don't sell a substantial amount of cheap systems. Everyone screamed during the height of the "netbook boom" that Apple had to put out one to compete. And they didn't, and now everyone who did is having financial trouble.
It also doesn't account for owner built PC's and servers.
True. I do that, and some other nerds do, but those numbers are exponentially lower and don't substantially impact the bottom line for home-built systems, at least.
For servers you have a point (Google custom builds almost all of theirs), but those servers all run barebones Linux without even a GUI layer. That's not the market for MC.
Windows servers are, by-and-large, still sold by OEMs and are included in the numbers. They are VERY high profit margin, but also quite low volume.
"Retail store" also would not include Dell, HP, or Amazon.
Right. Like I said, among retail sales they're at around 66%. Among ALL sales (including online: Amazon, Dell, HP-direct, etc), they were at 91% the last time NPD could generate reliable numbers. The PC vendors then all stopped reporting unit sales by category, so the only way to judge it is by surveying retail stores (where their numbers are better).
Again, this is ONLY among premium PCs.
But they're growing their total share. Year after year, quarter after quarter. And everyone else's shipments are down, year after year, quarter after quarter. Their overall growth is slower (when you don't count the iPad as a PC) because they don't want the low-end/low-margin/high-volume segment.
Profit, not unit shipments, is the gasoline that powers the engine of business. Back at the start of the PC wars, unit shipments mattered a lot because that was how you sustained the platform and kept developers committed. But the PC market overall is now in decline, being eclipsed and replaced by mobile computing devices. What profit is left is largely being sucked up by Apple.
IBM saw it coming years ago, and they got out. HP thought about it and couldn't decide what to do. The only OEM doing reasonably well still is Lenovo, largely due to their power in Asia. But Apple is now doing VERY well in China (which is on-pace to be a bigger market for Apple than the US sometime next year, even in Mac sales).