I would like to understand this at a more granular level. For example: What type of legislation prevents a company from selling a non-regulated product (not a

I would like to understand this at a more granular level. For example: What type of legislation prevents a company from selling a non-regulated product (not a drug) any way they want? Why can't a company like Ford launch a new division for direct sales of EV's? What is the benefit for consumers to force an intermediary into the equation? How is it that Tesla can sell their vehicles direct?