The foundation owns 50% of the company’s shares. While only the MaidSafe company is the only developer team working on Safe, all 5% of inflation goes to them, with 2.5% going to the foundation.
I believe that a vampire attack can only take place at the beginning of the network (1-3 years), so it does not matter that in the future the foundation will not have the money to support the network, we will be out of this danger.