I read the following (link):
Another time, Musk had an issue with a vendor [...] . The issue was that they were going Russian on him. "We got a big increase from the vendor after the first units were delivered," says Mark Juncosa, SpaceX's lead structural engineer. "It was like a painter who paints half your house for one price, then wants three times that for the rest. [...]
[...] Juncosa walks in to tell him that Alcoa is going Russian on him. The problem is that the domes are made of aluminum, and Alcoa has a special machine for making the aluminum SpaceX needs. They're the only ones who have it, they spent a lot of money on it, and now they want to make SpaceX pay for it....
[...] he listens to Juncosa tell him that he's found a way to go around Alcoa, involving smaller pieces of aluminum. "Maybe," Musk says.
So how did this end? Is SpaceX going arround Alcoa, involving smaller pieces of aluminum? How exactly? Or do they simply pay Alcoa what Alcoa demands?