And if that’s the case they’ll have to fly the airline dictated by their corporate policies, and/or will already have signed up to an FF program of their choice for the flights they’re already taking. A separate discretionary holiday purchase won’t change that equation.
Or iIf you’re suggesting there’s something to be gained from speculatively dealing with low value customers because one of them may become an FF in the future (and then won’t have to worry about which airline to fly policies, or that their selection may not be affected by routes, timing and pricing at the time) that’s an incredibly long speculative hope, and given the volume not worth worrying about – and moreover not something that’s going to help with actual revenue figures right now that you’re talking about.