1. People who never collaborate globally/cross TZ vastly outnumber those who do. And the people who do can already use UTC right now. 2. Making everyone in the

1. People who never collaborate globally/cross TZ vastly outnumber those who do. And the people who do can already use UTC right now. 2. Making everyone in the world to use UTC is going to make everything less convenient for everyone who lives a few hours away from the UTC TZ (i.e., most of the world). Because in UTC many of their daily events are going to span 2 dates/weekdays. 3. For the handful of people who need to schedule cross TZ meetings there's https://www.timeanddate.com/worldclock/meeting.html https://www.timeanddate.com/worldclock/meeting.html, no sign up required.