You may have a point, although this might suggest otherwise:
http://justarsenal.com/why-arteta-should-be-made-arsenal-captain/23351
"On the field, Arteta’s an inspiration – always talking to and encouraging those around him. He has the experience and ability to command the respect of every player. And his attitude is exemplary. Just listen to what he said recently in an interview posted on Arsenal.com when asked about taking on the role of defensive midfielder: “In my mind, I think ‘How can I make the players around me better? How can I make them feel more comfortable?’ I am talking about Santi, Aaron, Jack, Tomas Rosicky – players like that.” That’s captain talk. And being given the acting captain’s role in the latter part of the season has had a positive effect on his own play, indicating a footballer who relishes responsibility."
That suggests he's vocal and has the qualities of a captain. As for Podolski, if he works hard every game and can last 90 minutes, perhaps he could be a captain. I agree with Wilshere, but he just seems too young for the role right now.
I think it's a bit unfair to say Arteta will make way. He was played out of position and did a reasonable job. Played a little further forward, I would expect him to pick up where he left off the season before:
[video=youtube;KINVsyoC1-I]http://www.youtube.com/watch?v=KINVsyoC1-I[/video]
I think Ramsey got better in the last few months of the season, but he just doesn't compare yet.
You could be right though. Arsene is known to trust in youth. Arteta's only just turned 31 though. Got a couple more years at the top.