Buying every system is their preference. Most people could do it if they really wanted to, seeing places like Amazon, you could do 6 months same as cash. I personally don't have the time to buy and own and use every new system, working 6 days a week from March-November. Hell, i don't have enough time to play all of the games i have for just PS4, and then there's the 6 free games every month from PS+ for the 3 systems. I currently have a backlog of about 10 games for my PS3 still, about 15 for my VITA, and about 10 for my PS4.