i assume that a lot of it has to do with the club to club relationship. it seems we did alienate a number of clubs during wenger's tenue. for instance, aulas from lyon hated wenger and that is why we could never buy any of their players. there is no way they would ever play nice with us, or if they wanted any of our players, pay us top fees. likewise, we tried to nickel and dime countless clubs during wenger's reign, and i have to imagine that operating that way is off putting to other clubs, and they arent willing to pay us top dollar for our players. compare it to clubs like liverpool that seem to pay sticker price every time, maybe that is why teams are willing to pay more for their overpriced crap.
i dont know. whatever it is, it sucks.