Less competition is definitely not good on this route! Whilst I always fly BA on the BOM-LHR route, VS' presence was useful to make sure that fares were low-ish, at last on both the UK carriers (I always found 9W to be more expensive on this route than both BA and VS, until recently). And if for some reason I fell out with BA, it was nice to know that I had two alternatives - from May there'll only be one