I think you have definitely proved me wrong with Trello. Upon reflection I have been on that platform since perhaps day one of its release (I was reading Joel on Software blog posts usually same day back then). I know for sure since the first month (Sept 2011 Trello tells me that) and I am pretty sure I have had a paid plan for nearly a decade, probably dating back to late 2012 when I authorized Zapier to connect to my boards for automation.