In ~2014, my colleague & I argued that social media (esp. Twitter) had become part of the critical infrastructure of disaster response. People were turning to Twitter during crises to share information about impacts and resources. Disaster responders were using the data shared there for situational awareness, and were communicating in real-time with their constituents. Today’s events underscore just how dangerous it is for society to come to rely on private platforms as critical infrastructure.
@katestarbird
Minor nit:
suggest "rely on private platforms" => ""rely on unregulated private platforms".
After all, for many decades, Bell System telephony was a heavily-regulated private platform monopoly ... with stringent rules about reliability and service, and a shared goal of Universal Service, even as that meant urban/suburban subsidizing rural.
@JohnMashey Good point! I think we argued in that paper that because Twitter and other social media were becoming part of critical infrastructure, regulation was needed … among other things to make sure under-resourced audiences weren’t excluded from them- and safety- information, but there are so many more points of rationale I’d add if we were rewriting that today.
@katestarbird
Also, if a resource becomes critical, regulation has to incorporate the extra $ to allow disaster survivability/rapid recovery.
For example: while I was at Bell Labs, this disaster occurred & it took a massive effort to fix quickly:
https://en.wikipedia.org/wiki/1975_New_York_Telephone_exchange_fire
1975 New York Telephone exchange fire - Wikipedia

@katestarbird And if you haven't read this recent book, it bears strongly on the issues of free-market fundamentalism & regulation:
https://www.amazon.com/Big-Myth-American-Business-Government-ebook/dp/B0B55F4XBY