> some people do exactly that. they refuse to communicate on anything but their messenger of choice. and sometimes keeping in touch with that person is more important than my preferences. oh, and for many people i do not want to share my phone number, which limits the available messaging platforms we can still use. we'll be lucky if there is one.

I’m sure there are some number of people out there who only use Facebook Messenger, do not check their email, refuse to use any other messenger, for whom you do not want to share your phone number with for SMS texting, and for whom one of their friends cannot self-control enough to scroll a Facebook feed when they use the Facebook Messenger app. I agree this scenario is plausible for some very small percentage of users with eccentric habits and specific demands who are unwilling to compromise.

I do not agree that we need to start using the force of government to regulate that companies cater to this exact edge case situation where both parties refuse to bend their messaging habits or exchange SMS contact information but want companies to create an entirely separate app for them to communicate on their platform.