I suspect SM had no intention of actually promoting Milk and Blackbeat

‌Milk's failure is at a level where it wouldn't even matter (I'm not even sure if they invested properly in the first place)
Blackbeat managed to make a name for themselves during their 1st album, but they disbanded, perhaps because they weren't profitable enough compared to the investment..
I don't remember them being a total flop, though
It makes me wonder if they were actually abandoned because there was no will to promote them