You may be right, but who then is morally in the right? I would rather be for a club that balanced the budget and played attractive football than for one whose success is due to a foreign billionaire.
Ignoring that though, Arsenal doesn't have an Abrahamovic or a Sheikh. They're in a different situation. So I don't think we can blame Wenger for a lack of trophies, he's working on the small budget he has and done an excellent job. Had he been at Chelsea or ManU then of course he would be fired for not winning, because their financial situation is different. But he's not, he's at Arsenal. He's done an amazing job. No way should he be sacked. It would be like saying we should sack Moyes because he never got Everton into the Champions League. And Arsenal has come out of this with a new stadium, great finances, and a team that should be great in the future. Maybe Arsene will quit before he gets to reap the benefits, but Arsenal will continue to be a great club because of him.
Name another Prem manager in this era that built a club the way he did. ManU always has been and always will be huge. But Arsene built Arsenal, and didn't do it by outspending the rest of the world.
Can't believe I'm even having to argue this.