That isn't a good comparison at all. "Don't use it" is a valid choice. I use it. None of my kids do. It's also "free" for you to use. So maybe stop trying to force them to do things while providing you a "free" service.
I don't think you understood their point at all. "Don't use it" isn't necessarily a valid choice when it's where all of your friends and/or family are. The "investment" is not monetary; instead, it takes the form of having connections on the platform. You are invested in the platform if your primary connection to someone is hosted there, and it costs a ton of time and effort to transfer that somewhere else.
