Why don't they build one chat system that all of these features work with. And when they want to try a new feature, put it as an option on the same app. You don

Why don't they build one chat system that all of these features work with. And when they want to try a new feature, put it as an option on the same app. You don't need to make a new chat app all the time! Pick one, give it a video call option, let it do sms, let it chat with people with google account, make it work with business domains hosted by google. Done!