Plus he has always wanted an alternative to the studio system, now he'll be able to be his own release company as well as production company.
Red Tails and Indy 4 being his last hollywood films, maybe. Unless he decides to change his mind about episodes 7-9, which is highly doubtful.
as for him donating money to usc film school that is nothing new it's his place to pick up the next generation of lucas employees, as it always has been, as well as some of the other universities where his friends went.