Sony hasn't been at E3 in a few years. I'm surprised Nintendo and MS took this long to stop showing up also. You pay extra money and abide by the expo's timeline and rules, only for people to mercilessly bitch about your showcase year after year. Sony's State of Play pretty much makes sense because you can control the costs, release on your own time, and when people mercilessly bitch yet again about your showcase, at least you can go to sleep knowing this was on your terms and with money saved