Are you kidding? True AVs will make Uber/Luft even MORE profitable because they won’t have to pay out or worry about human drivers. AVs are the end game for these companies.
Today people drive others around for money. Tomorrow people let their cars drive people around for money. No one thinks Lyft and Uber are going to be buying the cars, people just won't need to be physically in them to make money from Uber and Lyft any more.