In previous debates on this matter I think it was clearly proven that PS2's impact was quite minimal.
Depending on which region you are looking at. I'm willing to bet there were a fair number of people (like me, and certainly in Europe and Japan where other formats did well) that didn't have a DVD when they bought my PS2, and no matter how hard people argue that this isn't the case, and no matter how hard they scream that the PS2 sucked as a DVD player, the PS2 has, in fact, been used as a DVD player a fair bit. In Japan, the PS2 was key to establish the format, because they had both Video CD and LaserDisc. Of course, in terms of percentages, initially that would have been relatively high, and then it would have dropped off quickly as the mainstream picked up DVD players that were more specialised and/or they weren't interested in games at all.
However, there is again a flaw in Joshua's internal logic, in that IF the initial phase of a console is more important (as he argues for the 360 and against the PS3), then the early contribution of the PS2 to the DVD's base is conversely important even if it was small. And, shock, the same goes for PS3's contribution for BluRay. I'm not going to repeat the argument again, and at least in theory its implications go either way towards the debate.
*Removed off-topic banter and unhelpful joke about platform bias*
HOWEVER ... I much more object to akamajou's tone. I've been on this forum a little while now and this is not an appropriate place to bring out the 'you're obviously working for company x or company y' card. Even if it is true, it's simply not suited to this forum. A lot of people here in fact are working for a certain company in the games industry, yet they are also some of the most valuable people to discuss with. If at some point in time they will say things that favor the perspective of their employer, whether they have to gain by it or not, this particular forum can never work if we don't separate the factual argument from the individual who is making the post.
While in my time here there has in fact been at least one employer of a certain company who came here with a specific agenda and nothing to suggest he had any other reason on this forum then to spread misinformation and marketing speak, they usually stand out so clearly, that the moderators here pick up on the issue and deal with it appropriately.