What your saying doesn’t mean anything at all. It’s just an baseless assumption, I don’t know how you can cite ‘simple psychology’ Christ . There’s plenty of excessively selfish players at clubs proportionate to their level. Even your example does’t hold true when Alexis himself was regularly selfish/greedy at Barca, it a feature of his game that has both positive and negative implications.
Regarding the rest of post and Ozil - Alexis playing that’s firmly a Wenger issue.