It's not just about money, there are cultural changes that you can see from a distance, but when you are not in the middle of it. For example, I used to play s

It's not just about money, there are cultural changes that you can see from a distance, but when you are not in the middle of it. For example, I used to play soccer when it was thought that doing weights made one slow or "tied up." When using any form of data was inapplicable because "soccer is different." When using a psychologist was considered weird, queer or a waste of time. And me lifting weights (I watched volleyball players and baseball players coming to the same gym I was going to doing weights all the time), using the little data available to help me better understand the game (I am a scientist after all), and being interested in the psychology of performance was seen as the quirky guy who partly you tolerate, and partly you make fun of. I was right, but I was there too soon. Now everyone lifts weights, everyone uses data to inform decisions, and most professional players use the services of a psychologist or are interested in the psychological aspects of performance. One thing that has changed in a major way is that what was done by the 0.001% of athletes, with the Internet, social media, and the ubiquity of cell phones, has become visible, and even the most stubborn, conservative, and skeptical people have seen how the top-of-the-food-chain trained and operated. It became impossible to deny it, to say "but for us/in our sport, it is different". It was not.