And?
Even if Punk signed, it wouldn't mean anything. Yes, TNA fans worldwide would bust a nut for it. Yes, some WWE fans will give it a looksie. Yes, the product will improve (slightly) since Punk's a talented guy. Other than that, nothing will change. Only TNA's pocket will become much, much lighter because they think signing a big time star will do their marketing for them. Didn't they learn with Hogan? You can't just sign someone and expect people to find their way to TNA on their own.
So what if they sign Punk, if his arrival and existence within TNA is not marketed well enough? We already see how abysmal Spike is when it comes to promoting TNA. Outside from that, I doubt TNA has the budget to pull off a bigger marketing campaign. Marketing campaigns don't HAVE to be expensive, mind you, however it doesn't seem like their marketing team is creative enough to bootstrap and use the power of social media and the Internet to their advantage.
And EVEN if they did pull off some amazing, creative marketing campaign that somehow went viral and some attention was put on pro wrestling, does TNA have the product quality to keep those people watching? Fuck no! So they'll come in, see what Punk does, then behold 90+ minutes of TNA being average and go back to watching something else. TNA has to have a top notch product first, then start thinking about signing big names that attract attention. If you're butt ugly and you go to a bar, start yelling and acting like a fool - yeah, you'll get the attention of every pretty girl in the bar, but you're still butt ugly. So they'll look away. Get my drift?
Those are all theoretical situations. TNA doesn't have the marketing power to make this signing count, they don't have the product power to make whoever comes by stay, they probably don't even have the money to keep him either. They'll just throw shit at the wall and hope it sticks, as per usual. It won't. It'll slither down the wall and plop itself on the ground. Mark it as a failure. Forgot the number, lost count.
In the end you're left with a pretty cool thing for TNA that will give them a temporary short term boost and cost them a whooooole lot of money long-term. Whoop-dee-doo-zip-dee-doo-dah-ratta-ratta-woop-woop.
If TNA spent as much effort on signing Punks and Hogans as they did on making Punks and Hogans, maybe they wouldn't be scrambling for a TV deal right now. It's not like they don't have the talent. But heck, it's easier to buy it than to make it right? Yeah ... that works out great every time.