I think you can do more with the right PC. "They" prefer the consoles over the PC in that they can make a higher profit because of the "I gotcha" factor. A consumer commits himself/herself to one line of console therefore creating a monopoly for that companies games, so they don't have to compete. There is still competition between console systems, but if you can get somebody trapped into your console, then they typically aren't going to switch midstream. That's why most companies sell their consoles at a loss and jack up the prices of the games.
Go big or go home.