I tried to watch it, but it just felt like a 'Bill Gates' public profile PR piece. Basically just espousing how great Bill and his family are and were at all points in history.
I regularly get downvoted for pointing out that Saint Bill the Philanthropist refuses to acknowledge all the shitty behavior and the damage he left behind to earn him that fortune in the first place.
There is no way to 'grab the brass ring' by reading or watching this type of documentary. Understand it for what it is. It's entertainment pure and simple.
To your point 'shitty behavior' absolutely true. The amount of anxiety and aggravation that OS and some of those business practices caused is rarely talked about. In this case making money was tied to having a bad product in part not a good product that people loved. The entire eco system was dependent on convincing users they didn't know enough and needed help to get it to actually continue functioning.