David Reeves retired from his joint position as deputy president of SCE worldwide and president of SCEE last year.
Speaking as part of a fascinating new interview looking at the future of video games hardware - which will be on the site later today - Reeves told CVG:
"When you're on the first-party side, you realise how really, really expensive it is to develop a platform. Whether it's PS3, or Xbox 360 or even Wii, they cost millions - maybe not billions, but absolutely millions. You don't know when to put that stake in the ground of technology and move on. You know, say 'that's enough'.
"Eventually, it may just become so expensive to develop [their consoles] that Microsoft and Sony say, 'Okay, let's get together.' I'd say it's between 10 and 15 years away. That's how long I think it will take. I don't think it will be the next console cycle, but probably the next cycle after that, where you might have something platform-agnostic.
"But it might be different players, of course. It might be Google getting together with, dare I say, Microsoft, or Google with somebody else."
Reeves, who spent 15 years at PlayStation before his retirement last year, also discussed the future of handheld consoles and the potential of standalone gaming TVs.
Now that would be insane but it's doubtful that things will be the same 10 - 15 years time.
