The printing press was very much an invention /not/ at the disposal of the citizens. It analogizes poorly to the Internet.
How many people are involved in ISPs, data centers, and other internet backbones? Most people are consumers rather than producers or "printing press" operators.
Best to revisit your ideas pf which leaflets were popular, and who was making them in the 1500s
Actually it's perfect. How long did it take rulers to go from fighting the printing press to using it for propaganda and their own ambitions? The internet has just speed run that same course.
Of course not, it’s the books that people had access to.