I find it interesting that S-Video has all but disappeared on consumer video equipment (yet component and composite remain). For a lot of older gear/consoles, it provides the best quality you can pull out of them. But time marches on, I suppose.
Interesting observation, I never really thought bout that. Does seems odd.
Not really. Thinking about the current batch, and previous batch of consoles, the only system that still supports S-Video right off the back of it is .... none, IIRC. Any S-Video support is based on a bulkhead connector that splits the component channels separately - the S-Video port on the back of the systems is gone.
Component > S-Video > Composite - and getting RCA cables is easy and isn't so "niche" in its placement.
S-Video was for videophiles before component and DVI were more popular. Now that HDMI has all but supplanted even component video, there really is no room for it both from a cable and port cost perspective.
I think you'd be hard-pressed to find someones purchasing agenda of new hardware to be swayed by the inclusion of S-Video, unless they have some old systems that absolutely required it.