and just like amazon is? or windows OS is with other companies having the Ability to make hardware also that you can load your Windows OS on. what is if Sony was looking at taking Playstation as an ECO system not tied to only Sony hardware? 

why worry about if you sell less "sony" only hardware box's when every device out there would be pretty much able to run your software! is it about selling the software main goal or is it the main goal of selling only the hardware?

with Phones and tablets and 4G LTE speeds being heavy invested into, its already at a point where soon Games of almost PS4/xbox1 Level of Graphics ie: 720P and higher on Smart devices become the norm because the hardware is more than capable Soon to handle the streaming Quality of the PS3/xbox360 on a d@mn smartphone or Tablet level hardware. for many gamers outside of the Hardcore on gamer forums its enough.

many casual minded gamers far out number us, so the market goes where they trend, and sad to say that is smartphones and tablet level hardware. it where many casual gamers spend their time if or when they game by a freaking landslide..Apple and Google both has disrupted this part of the market, we may not like where it is headed, but that is the Going Trend, does that mean game consoles go away completely, no but it does cut into the growth % right now if you are lucky 150+ million consoles may be able to be sold permplatform holder per series of game console in a 10 year pd. in time..smartphone and tablets just crushes that, and since they in general us Arm Cortex chips porting and development costs are cheaper/ but the level of advanced Ai/Physics?resolution/Audio are good enough to the level of even over the ps3/xbox360 with performance at reduced screen size's. by next year the performance gap between smartphones and tablets  and xbox360/ps3 will be even closer and in some cases even better on tablets and smartphones.

the key is it may not be ps4 or xbox1 level, but since its near xbox360/ps3 and those devices are still current on the market being sold and at the way smartphones and tablets out pace advancement in new system releases, the 3rd party developers are already in support of smart devices and tablets. look at rockstar, and square.