Bergkamp was cut-price because Inter had given up on him. Anelka was nothing, Vieira was nothing, Cesc was nothing. Henry was another who was at a cut-price at the time.
It's not about the money. It's about how Wenger is running the current team. It's about the way he hasn't addressed the problems within that team...a defence that leaks soft goals, the inability to get the right mental attitude within his group of players etc etc.
He refuses to think about outside influences. He will not make the tactical adjustments needed, and in essence does not pay the due respect to other teams that any other manager would.
It isn't money we need. He can go out and spend if he wants. As could any manager who came in. And therefore, throwing money and seeing if it sticks doesn't solve the problem.
We need him, or someone else to sort out the ethos at the club. We don't need a sugar daddy.
Therefore I don't see what your argument is about....why do we need a sugar daddy if we have money to spend??