The BA route to Oakland appears to be nothing more than a tactic to take on Norwegian.
Surely if BA felt there was a demand for this type of route from Gatwick they would have been better off going 'one-up' and offering a direct Gatwick-SFO route instead of into Oakland? This would also compliment their existing Heathrow service.
It's a shame because there are a lot of long-haul destinations that I'm sure BA could do very well on from Gatwick