They'll make their money on a tour that's where they are focused now. A third single will do nothing for sales and at least will give gaga two days of media. She's already spent her promo on tv performances and specials - people know she's got music out and they on the whole don't care. The label will be promoting the tour now. Ads for that is what matters. Gaga and fans are the ones who care about a third single happening. The label? No.