The months leading up to Verizon's fateful decision in December 2018, they were in the range of over 500 million MAU. Within a couple months after, the number was half that.

Failing to learn the lessons of Betamax continue to haunt decisionmakers, essentially.

The takeaway should likely be: Twitter will be fine if people can still post their porn there.

Wasn't the downfall of Betamax that the tapes were limited to 1 hour (which Sony thought was fine since that was the unit of commercial videotapes) and most people wanted to record sporting events that took longer than an hour?