You make it sound like people only use iMessage because of the network effect/lock-in, and clearly aren't considering that perhaps said network effect exists at least in part because iMessage is just...good.
It’d be a very different world if nothing was allowed to have unique access to anything. It might even be better, but it would be a long way from this current version of capitalism.
It would be a real problem if Nintendo had a monopoly on good games on the US.
They invented a nice thing, made it available on their hardware, and now people like yourself who refuse to buy their hardware for whatever reason are salty you can’t play on the platform so result to juvenile arguments like “I’m being bullied” to try and get your own way. It’s fucking ridiculous and you need to grow up.
EDIT: that should be “resort to”.