It tells me that no-one has the presence of mind to stand up to him, do you think Wenger would walk if Gazidis or Keswick said you need to delegate more Arsene....would he fuck?
The likelihood is that Sanchez was bought with Wenger having no say in the transfer negotiation as he was in Brazil at the time? Wenger just accepted it.
I do agree with you when you say he's a control freak, but I also don't believe he's the type of person to cause a conflict if some things were taken from his control.