Boeing doesn't design engines. They buy them from other companies such as Rolls-Royce. Therefore any innovations there will be avaliable to everyone and not just one company.
Believe me, there are a wee bit more details when it comes to buying engines. It's not like when you go shopping for cereals.
Granted bleed-less engines are being offered on the A350 aswell, but GE's bleed less engine was designed to meet Boeings aggressive demands for their 787...and wouldn't you know. Airbus jumped on the bandwagon aswell
"Based on the architecture of the renowned GE90 engine, the GEnx is being designed to meet the aggressive performance targets for the twin-engine 787"
So the engine industry doesnt quite work as you believe Woodlouse. Boeing developed their aircraft with close cooperation with General Electric.
I dont' see the point in arguing that the 787 wont be technical superior, because it will be. Aviation industry is gong to take a huge leap forward.