Allow me to play Devil's Advocate for a moment.
What are Spike's incentives for continuing to air TNA Impact as opposed to just replacing it with Cops or whatever?
If you're TNA, what do you say to the Spike executives to try and convince them that TNA is worth keeping on the air?
There's not really any argument on TNA's part. As the WWE deal showed, wrestling is viewed as low-rent and cheaply produced programming that draws a decent rating, and nothing more. If Spike offers them another deal, they'll happily sign it and continue existing, and if not, they'll go away.