Not talking about tablets and mobile devices. I'm talking about the way they bundle their PC hardware and software. And specifically about the way their TOS forbids installing OSX on non-Apple hardware.
Yes, but that decision in itself doesn't "drive up prices." They offer a product that consumers are willing to pay more for. They aren't a monopoly and don't have pricing power.
The hardware market is a competitive market, but the OS market is an oligopoly. I think it would be fair to say that most consumers want the OSX and care less about the hardware. Indeed, you could build a PC with equivalent hardware to a Mac Pro for 60% of the price.
But Apple won't sell the OS separately from the hardware. This is bundling/tying and can be grounds for an antitrust suit. The bundling of the OS (which they do have pricing power over) with hardware (which they normally wouldn't) allows them to overcharge for hardware:
That's just ridiculous. First, you assume that people buy Macs for the OS rather than the the beautiful hardware. Even if it's true, where's the evidence?
And why does it matter that Apple ties the OS to the hardware? Still not illegal because the according to your link, it's illegal if it's a tying of unrelated products. OSX and Mac hardware happen to be very related.
Apple positions itself more as a luxury brand with a somewhat higher price point (arguable) and the consumers are allowed to choose what they want. And they have spoken.
Hardware that the majority of consumers aren't paying for. If they had a stranglehold on the supply chain, you'd have a point, but Apple raising prices on Mac hardware does nothing to the overall market.
So we're going to pretend that market forces didn't cause this?