> Suppose you had two choices when chatting with your friends. The first will give you a great messaging experience, but you’ll need to sign up for a new app.

> Suppose you had two choices when chatting with your friends. The first will give you a great messaging experience, but you’ll need to sign up for a new app. Make that several new apps, all of which are completely separate from each other with no integration. That's why people choose option 2.