Remember, that "market" had most of its seats filled by the Time it reached knock. You could argue that knock hads only a small market and the only economical way to fill it is through having a stop. But I don't want to aggregate you that much
Knock has a market, there is no denying that, but it needs to prove that putting a plane there is more profitable than putting the same plane in Shannon, Dublin or even Cork. Cork will always be the more profitable option, so in the medium term, unless cork gets a route, I can be almost sire knock won't see one.