Yeah, if Sony (et.al.) can sell DivX-compatible devices what's Apple's real reason not to do it with aTV? Surely it can't be a licensing cost issue because much smaller companies provide DivX support for their products. For example, Elgato's discontinued EyeHome supports these video formats:
MPEG-2 (including unencrypted .vob)
ISMA MPEG-4 (.mp4)
DivX (including DIVX, DX50, XVID, DivX 3.x, 3ivX 4 codecs)
And its audio support is mostly a...