Epic React is Kent's attempt at making the biggest impact on the world. It's Kent's philosophy that he can have a much larger impact by teaching other people to write excellent software instead of just doing it himself.
Epic React has been in the making for a long time. Its methods are much more thought out than your average course. You can't just throw it on your Chromecast and 2x your way through all of the videos. You have to put in the work. Kent uses the proven methods from the book "Make It Stick" which have you trying to solve the problems yourself first before Kent provides his instruction.
Having a team also made a huge difference. A lot of people do this themselves but Kent worked with a production team. There are so many advantages. Lots of instructors struggle with all the extra stuff you have to do when selling content that isn't creating the content. The production team let Kent focus on the content and the hype. Kent did not want to deal with editing, support, payments, design, or copy. He wants to take knowledge from his head and put it into other people's heads.