Originally Posted by
djohannw
This would require to have an IT-system being capable of managing inventory across cabins.
It does. I'm booking often close to departure. As soon as my booking is reserved in the system availablity goes down by 1 immediately and often on all available First/BIZ fares (F, A, C, D). I've seen this influence to BIZ, when booking a first ticket and also vice versa.