Edit to answer my own question, looks like the original G Suite was in August 2006, but at the time it was just GMail, Calendar, and Sites. Docs was added in early 2007. Wave was a thing under Google from 2009-2012, but was never part of G Suite.
Also have a prototype for what at the time was an improved Outlook to Google Calendar sync (e.g. it maintained coloring by converting color categories in Outlook to Google subcalendars of matching colors) but was hesitant to productize it one reason being I wasn't sure if Google Calendar would live long enough to make it worthwhile.
I wonder if a reputation for prematurely killing their products is harming Google's ecosystem-building efforts.
I didn’t use google calendar for repeating yearly appointments for almost a decade because I thought the same thing. Glad to know I wasn’t alone!