The thing about PC games is, they can have a much longer sales lifespan than console games because they exist digitally. So the long tail effect kicks in, where they are willing to drop their prices and still getting sales in a year, 2 years etc down the line. People who weren't willing to pay $60 will pay $20, and to be honest it doesn't make that much of a difference if you're not playing the newest games on the market. Whereas console games are fighting for the same shelf space that gets replenished very quickly; and they never have time to let the pricing drop experimentally. It can make a huge difference to the monetisation of a game.