in my opinion if Al Capone were still alive he would not stay on wall street but would be in a luxury private resort sipping whiskey and directing his smuggling trades from there (he would continue his primary activity in short) such as drugs, prohibited alcohol (absinthe)
If Al Capone was a alive now probably he would live in some mansion, just chilling by the pool and drinking margaritas. He would have so many people to do the work, he will not even lift a finger for something. The president will be chosen by him, something like Pablo
Definitely support yours opinions i just want to add that he will be so untouchable probably he will be ''the black papa'' the man in shadow of the president or even he will control wall street.. just like the old times if he likes something will take it but more carefully.