I still don't understand why the ATV doesn't have gigE. The BOM differential for 100mbit vs gigE can't be more than $1...
App downloads would be faster for the tiny slice of people with > 100mbit internet who also aren’t using wireless. I guess that’s something? Probably not worth a smaller margin to Apple.
All this, for really no reason at all, since all video streams for the foreseeable future will fit just fine in under 100Mbps.
Of course, speeds in excess of that are totally not necessary when streaming video, but I could see the case when downloading multi gigabyte files for games, etc. Personally, I have mine connected via wired instead of on my wireless network, just because it's more reliable and it sits right next to a switch already.