Presumably, the lack of updates isn't just some slip-up. There's a reason Apple isn't updating it. I would guess it is doing poorly relative to other consumer

Presumably, the lack of updates isn't just some slip-up. There's a reason Apple isn't updating it. I would guess it is doing poorly relative to other consumer Macs and has little strategic value. (Probably, the Mac Pro sold very poorly which is why Apple let it languish as well. But they eventually realized it's strategic value and decided to put some resources into fixing it. The Apple TV probably also has not done well historically, but has tremendous strategic value, so they haven't let it languish too much.)