who is John Galt?

"Gehry responded with a public resignation from the project, and at that point, Diane Disney Miller—daughter of Lillian and Walt—intervened. “We promised Los Angeles a Frank Gehry building, and that’s what we intend to deliver,” she declared. There would be no further funding from the Disney family if Gehry was not kept on as the architect. Broad backed down, and in 1999, more than a decade after he won the commission, Gehry was finally given free rein over the project."