Because just like what happened to Steve Austin and the Attitude Era in general, how do you top what you did last week? At some point, you can't shock people anymore, it's just beyond the human capability. At that point, you have to have something else to rely on. At that point, you have to work with the same material everyone else does.
You make a fair point, but look what happened when the Attitude Era ended, wrestling gradually lost popularity, and now we're at a point where it's just not getting the same numbers that it used to. I don't know
why people aren't giving the same love to the WWE now that they were in 1999 and 2000, but they aren't. It was in the WWE's best interest to keep the Attitude Era alive as long as they could.
I suppose the difference here is that CM Punk isn't boosting ratings, but once we see buyrates we might have a better idea of how big an impact he really is making. If he is indeed helping to sell more PPVs, then it'll be in the WWE's interest to keep him smarky, rule breaking, and pandering to the IWC as long as possible. There's always going to be authority figures for Punk to rip on and scandalous stories for Punk to share, and as long as they keep selling, and I don't see why they wouldn't, he should keep doing it.
I think you're looking at his antics like a drug, which is a perfectly valid view. People are going to keep eating it up and eating it up, but eventually they're going to build up a tolerance to it and it's not going to give them the same rush it used to, and he's going to have to do something different, like prove he can be entertaining under the same rules.
I disagree with that way of thinking. People like what they like, and if the casual fans like CM Punk exposing backstage drama and whatnot, they'll fall for it every single time. Look at shows like CSI. It's the same goddamn thing each and every week, but they still get huge rating numbers. CM Punk can do the same goddamn thing every week, but if the fans like it, they'll keep on watching him do it every single week. Or look at The Rock, one of the greatest draws in WWE history, and he cut the same promo week in and week out. People loved the catch phrases, and they'd just keep watching so they can hear the Rock say "Jabroni" and "Know your role."
But once again, until we see how Punk has been selling the PPVs, we'll have no idea if letting him run with this persona will be a good business idea or not.