If that was the case we'd have had HD-DVD and not Blu-Ray. The vast majority of porn studios sided with HD-DVD due to cheaper production costs. The consumers however sided with Blu-Ray, largely due to the PS3. Gaming did indeed drive the adoption of the last format war, porn did not.
On topic, I went HD for my xbox over 4 years ago, only a few months ago finally signing up with Sky's HD service because my TV region will be last to get Freeview HD in 2 years time. It's the same for the majority of my gaming friends and colleagues. I envisage it will be a very similar approach for 3D games, especially as my PS3 will only require a firmware upgrade, although Sony will probably require payment for it by the time they release it.
Paris because, well it's obvious surely.