JP@whitequark looks like SFDC is clamping down across the board: the local tech slack (sub-5k users) also got one of these (and can confirm this isn't hearsay, have seen the mail myself)
has a 5-figure (USD) "for your billable monthly active users" proposition to that org
(org was, to date, on the nonprofit-freebie golden path)
All GNU social JP content and data are available under the