I don't think piracy is the reason for including always-on DRM. Console makers are trying to kill the used game market in this generation.
http://arstechnica.com/gaming/2013/01/examining-sonys-intern...
http://arstechnica.com/gaming/2013/01/examining-sonys-intern...
This all seems like linkbaity rumor to me, Microsoft doesn't really have a business case to go to always on DRM and risk turning off a segment of their customers (some customers won't care and would buy regardless). I don't think Blizzard or Ubisoft would consider not building for the XBox platform if Microsoft refused to support always on DRM so Microsoft isn't beholden to the game studios.