Sony hasn't had to do anything up to this point. If it ain't broke, don't fix it. Also, Sony as a corporation is bleeding money. It's likely using the revenue from PlayStation to keep itself in the green rather than re-investing heavily into the brand.
Wat???
You know they have GTA V, Far Cry 4, Driveclub, LBP3 bundles in EU right. This is more SCEA not doing bundles that anything.
To OP - I don't think Sony will be that stressed if they lose both november and december expect it's by a large margin which seems unlikely. There have a 1M or so lead already and they will be most likely be back to being the top seller from next year.