No, the person I was replying to was saying that CEOs should 'just order' the IT guys to provide macs to employees who preferred them. I was explaining why that doesn't work. If you have a business need for a mac in a large enterprise you can normally get one, but the only people who find themselves in that situation are people working on a few specialist areas. They invariably also need PCs in order to interact with the rest of the house systems.
One of the biggest banks in the world, where I was working recently it was incredibly hard to get upgraded to a decent sized monitor. Many people were still stuck with twin 14inch LCD panels that had been bought when the head office was new. Twin 17inch panels were standard, getting anything bigger than 17inch involved serious hoop jumping.
More than 50Mb - yes Mega bytes - of email space had to be specially requested and again caused much grumbling. More than about 150Mb was basically not available to mere mortals. Sorry, but if you haven't worked in these kind of environments you have no idea of the kind of inertia that you're dealing with.
'Just Ordering' IT is like Canute ordering the tide, IT has acquired a life of its own in the enterprsie and if you sack the CIO every time the IT department fails to deliver, you will be hiring a lot of CIOs.