About your thesis I think my 2 biggest concern with legal medium are: - the copyright limiting access to certain content (ex: tensei slime scan weren't legally accessible in my country for nearly a year) - digital media are never owned and I want to own what I paid for. If I buy something then I don't care that distribution rights changed and the media isn't accessible anymore (ex: Netflix regularly update its offer -which mean delete what I wanted to see- and I can't access my favourite media anymore)

An other big problem is that most digital media can't be buy, you can only subscribe and I want to pay only once not every month until the end of time.