Also, it&#x27;s not &#x27;disruptive&#x27; which isn&#x27;t very sexy.  At the same time, no one&#x27;s really disrupted email (probably since gmail) and even sms for the most part, as a form of communication because they are the only cross platform with a very low barrier to entry.  Note that all the sms replacement apps still use sms as a fall back since it&#x27;s a shit show of walled garden apps.