I don't know where you get yor facts from, but BA did indeed sell their franchise airways to easyjet. Why because they couldn't run it profitably. I guess it's another 100 million that help make British Airway's magic 10% profit margin!
BA sells GB franchise to Easyjet (CORRECTION) - Business Traveller
Lucky if next year isn't a -10% loss margin. Then sometimes I wonder if BA actually have this as a real business target.
Good to see nothing 'major' being announced with easyjet. I fly with them next Wednesday!