> most people won't switch because of network effects, so meta can keep tightening the screws.
I don't have high hopes either but people did stop using Messenger in favor of WhatsApp, so they can absolutely stop using WhatsApp too.
The "mistake" (if you're evil) those apps make is that they use your phone number as unique identifier, not a login. So if you switch app, you still have the phone number of all your friends.
Although those apps are still out there, i really miss those days were all you needed was some kind of unique identifier like a nickname, username or something like that an email address and some fancy password (and you weren't even pestered about to provide a phone number anywhere!).
I don't have high hopes either but people did stop using Messenger in favor of WhatsApp, so they can absolutely stop using WhatsApp too.
The "mistake" (if you're evil) those apps make is that they use your phone number as unique identifier, not a login. So if you switch app, you still have the phone number of all your friends.