> I don't see Bill Gates attributing reading to his success at all.
He did many many times.
"Every book teaches me something new or helps me see things differently. I was lucky to have parents who encouraged me to read. Reading fuels a sense of curiosity about the world, which I think helped drive me forward in my career and in the work that I do now with my foundation."
He also talks about it in the Netflix documentary Inside Bill's Brain.
Warren Buffett famously said to some students, "Read 500 pages like this every day. That's how knowledge works. It builds up, like compound interest. All of you can do it, but I guarantee not many of you will do it."
Charlie Munger is as much of a reader as Buffett. He's especially fond of biographies, according to the book The Joy of Compounding. His children call him "a book with legs." https://fs.blog/2013/05/the-buffett-formula/
From googling these guys just now, I found there are a lot of other examples. Mark Cuban is one, crediting a lot of his early success to reading and saying he still reads over three hours a day: https://blogmaverick.com/2011/04/07/shark-tank-success-motiv...