I would either:
a) Cut off the Wii U slowly (as to not piss off the people who already bought one), but would discontinue mid-2014 if sales are still sluggish. After this, I will focus soley on the 3DS.
or
b) Moneyhat. Start trying to buy exclusives, and get some multiplats. The problem of course is power, so I might just scratch the Wii U and upgrade the hardware, and replace current Wii U's on the market.