Well no because the theory is that say we sell Shaw for £15 mil. We spend it on 2/3 players who improve the first team squad overall. Finish higher up the table, do better in cup competitions (maybe even win something), then our youngsters will want to stay.
Its going to take a few years at least before every young player coming through is going to want to stay with us. Not all of them will be like Lallana, the simple truth is the majority are likely to be more like Chamberlain and will take the big move if offered. And with the amount of player power about nowadays there isn't really much you can do. We are fortunate that we have Cortese who can get us good deals for our outgoing players so we can re invest the money back into the playing side.