Your thesis I think rather wrong. You say " I think the change you describe happened soley because of her financial circumstances. " Given that she wrote about these in her journal her change of views came about while writing We the Living, so her views changed before her wealth did in a substantial way, not after.

From the time We the Living was published she was secure financially. Even before it was published she was secure, though not wealthy and worked in Hollywood at various jobs in the studios. But she was always employed and was pretty much financial sound from shortly after arriving in LA for the rest of her life, leaving a substantial estate.

I have no idea what you mean by using "force as a way or producing justice." You have her timeline all messed up and have poor when she wasn't. She was writing films in Hollywood and published both We the Living and Anthem BEFORE The Fountainhead.