Well, he's not going to stitch Wenger up by saying he's choosing not to spend it, that wouldn't be good PR would it?
The money is there, the board have said so in the past and now Gazidis has. Ok it's not exactly Man City esque, but we can certainly afford more than the paltry net spend we normally end every transfer window with.
Whether it's a moral stance from Wenger on spending large amounts, whether it's because we get priced out by other clubs, or whether Wenger feels one of his kids is good enough to step up, the point is this club does not make the most of it's resources. At least most fans understand that which is good.