This is all politics.
Any rational individual can see that the Premier League stands next to no chance of proving the charges against City, but having painted themselves into a corner, with the eyes of the football world upon them, the League can't be seen to back down. So millions will be spent over the next few years to arrive at the inevitable conclusion, that there's no substantive evidence to back the charges up.
Of course, by that time the present runners and riders in this Premier League fiasco will have retired to their yachts and country estates.
For now the existence of the charges is enough, it drives the cheating narrative, but eventually this farce will come to a conclusion, with the charges not proven, City will be exonerated, but without fanfare and sprinkled with ifs and buts.
The "trial of Manchester City" will have to end one day, but not without doing what it was designed to do all along.