The idea that any company in the history of wrestling could sell out buildings even in their home town for four nights in a row is ludicrous. Especially since one is basically their minor league and three have the same wrestlers.
Imagine 97 WCW had
Saturday - a card with Scott Norton vs raven on the top, with the rest wcw Saturday night guys
Sunday - super brawl
Monday - nitro
Tuesday - thunder
All in Atlanta or Charlotte. It's absolutely impossible to NOT cannibalize your own audience. This is a pure non story to me outside of perhaps poor planning...and even THEN they're gonna make way more money in this four days with the shows than they would any other time of the year other than Mania.