As for there not being any evidence against Moggi or Juve, well please excuse my ignorance here, as you probably know more about this than me, but if there was no evidence, then on what basis did they demote Juve and ban Moggi?
Actually, there wasn't really any evidence.
Not in the sense that they had a phonecall which proves that Moggi was fixing matches or picking referees.
They had some X number of phone calls and individually none of them was showing anything illegal. But they used all the phone calls as a base to construct a story that there was a system in place, orchestrated by Moggi.
They only had an assumption that Moggi was doing all that and the way they formed the whole story, all those calls they presented did imply at first that there was something shady going on (but only IMPLY, not prove. Not even close to it). The judges accepted it and convicted him in a minute. That was hilarious.
But all the new phone calls, with other figures from big clubs doing exactly the same things Moggi did are destroying the initial argument that there was a system orchestrated by Moggi. So now we will have a situation that everyone was doing the same and that if there was a system, you can't call it a Moggi system and you can't blame Moggi for doing anything different than the rest.
They demoted Juve and banned Moggi under the bases that he was the only figure who created and ran this system that favored only Juve and no-one else. They couldn't demote Juve and ban Moggi under anything else.
But if back then it was proved that he wasn't the only one doing it, then there wasn't a system either and the most Juve and Moggi could have been punished were small things that granted fines and nothing else.