FYI, the Maria Stark Foundation no longer existed by that point. Superior Iron Man caused Tony to lose a lot of money, hence, he couldn't afford to pay the Avengers. That's what broke up Hickman's Avengers World team. The ANAD Avengers were unpaid, hence why they had three kids and the secretive female Thor on there. Vision's solo showed him actually having a job, which paid for his house. The Avengers were later funded by Parker Industries, and then by Avengers Inc, which was set up by the Human Torch when he was on the Unity Squad.