How did we get from the Playstation 1 and Playstation 2 being by far the dominant rpg consoles to the Playstation 3 losing by far the console rpg war?
We? If anyone, Sony are the ones losing it, not the customers.
It's simple: If you think the 360 has more interesting games, then get a 360 instead of a PS3. You'll save few hundred bucks by doing so aswell!
Who buys a console based on which company made it? Who manufactures the hardware is irrelevant, games are what makes a system.