This strikes me as an interesting statement:
“The law firm is Peter Angelos’ legacy. Everybody acknowledges that, and he never intended for the law firm to continue after he was no longer able to manage it,” said Benjamin Rosenberg. (that's a lawyer on the Georgia / John side of the civil war)
Speculation time... but it strikes me as odd that Peter wouldn't want his sons to continue the firm after his death. It's almost a right of passage for what seems like most people who start their own business... fathers would love to see their children take it over and carry on. If true that he didn't want "the law firm to continue after he was no longer able to manage it", what's that say about him? Or his relationship with the sons in general?
Just sounds very strange to me, but who knows. It's a strange family it seems...
In John's case, he never passed the bar (per Lou's filing), so any role he'd have in the firm wouldn't involve practicing law.
I don't think this is all that unusual. Some parents prefer their children to build their own legacy rather than continue theirs. For instance, Jack Kent Cooke did not arrange for any means for his son John to inherit the now-Commanders when he died, even though John had an active role in running the franchise. If John wanted to own the team, he would have to find his own means to buy it from his father's estate. Unfortunately for the fans, he couldn't pull it off.