Yeah but Steam sales mean we PC gamers really don't have to care and with AMD chips going so cheap you can build nice gaming PCs for a little of nothing. My oldest has a hexacore with 8Gb of RAM and a TB HDD and it only cost $350 shipped, add in another $70 for his HD7750 and he can play pretty much any shooter he cares to play. the youngest decided to go for a quad and spend the extra for an HD7790 and everything is smooth even with the bling cranked.
So who cares if you have to get more than 1 copy? Thanks to steam we only have to download it once and then just copy the folder to the other 2 PCs and between Steam sales, Humble Bundles, and FTP games we literally have more new games to play than we have hours in the day and as a nice bonus you have a system that will play console games going back to the Atari 2600, PC games going back to DOS, and of course web, video, hell you can even get your work done on it
Oh and if you don't want to even spend that much? head over to Craigslist, plenty of Phenom Is and IIs and C2Qs being sold for cheap. Had a friend that wanted to get into PC gaming but money was tight, found him a nice C2Q system with 19 LCD and KM for just $130, he slapped in an HD6770 he found for $35 and is happily flying his WWII airplanes.