Is there any real reason to believe that the problem was his legal teams? You know there were a lot of them, right? Aside from the singular example late in the case, it is plausible that most/all of his legal teams were quite competent.
>Nothing stopping him from lying publicly about anybody or anything
It's a bit messier than that. For example if he's going to set up a new media empire things like banks will give a pretty big fuck you to loans and such if they think all your assets will be captured by the court and they'll be left holding the bag.
This doesn't stop him from putting together money in other ways, but massively increases the difficulty on his part as every time he does he'll find a suit showing up to collect it from him.
And as others have said, this has nothing to do with good/bad lawyers. The good lawyers came in at first and told him he was totally screwed, and because he's such a pompous ass he could not handle that.
The only lesson he's learned is to hire a better legal team in the future for civil (not criminal) suits.