Let me answer your first question with few examples: When Chrome started taking off in 2010, they introduced unique ID per browser user that's sent to their se

Let me answer your first question with few examples: When Chrome started taking off in 2010, they introduced unique ID per browser user that's sent to their servers. This has nothing to do with the web standards, but it's non optional added feature. When gmail took off in Canada, Gmail started requesting an actual phone number, to open an email account. The above are examples when company starts having advantage. When a company starts having monopolies, expect stuff like mandatory signons just to browse and such. In China for example, you must register with RL creds if you want to post for the masses online. TLDR: monocultures are bad, monopolies are bad.