That's what Hangouts was circa 2013. It did Hangouts messages, video / data voice calls, or traditional voice calls or SMS messages depending on the capabiliti

That's what Hangouts was circa 2013. It did Hangouts messages, video / data voice calls, or traditional voice calls or SMS messages depending on the capabilities of the other client. But the culture of new products launched rather than iterating on existing products like Gchat and allo and other products needing to be launched and hangouts being pillaged on its feature set so the other ones would look like they had a reason to exist meant that instead of working towards a Google version of iMessage that they could release an iOS client for and that's dominate all messaging, Google fragmented their efforts in a spectacular manner.