I'm banging an old drum, but LX already faced up to revenue loss when it took the UK off its business-saver routes. This happened a year or so back. Their reasoning was something impenetrable about travel agents not liking the arrangement. No doubt the value gained from happier TAs offset a drop in average yield on UK routes.

Until then I'd been happy to fly to MAD (etc) via ZRH. But without the additional miles in return for the reasonable price supplement, I now take the cheapest or most direct flights.