they would rake in huge amounts of cash from ppl who want a OS full of pretty colors.. and stupidly simple to use
If apple were in it for the cash, they wouldn't have fired Steve Jobs in the 1980's, only to let him take a huge amount of assets, start a competing company, and then buy it out in one of the biggest net losses a company has ever made. Apple do this stuff all the time; they can do shiny, they can do marketing, hell, they even have good products (although I say it grudgingly, and they're still overpriced). However, they just cannot figure out this whole business thing. They have consistently missed every single open market that has come their way, and if it wasn't for clever advertising and the multicoloured iMac series, the company would have went down the drain a long time ago.

Their OS is relatively cheap (compared to windows) and they bring in their money on their hardware.
That's not true, you have to pay for service packs and things that bumps up the price tremendously quickly.

-Dave