Proprietary software does WEIRD things to people:
Dev1: "Oh btw I paid for a Zoom account so I can setup a room for us to chat in"
Dev2: "We've just been using Discord for that"
Me: "If you don't have Discord and don't want to spend money then we could use any of the Jitsi meet instances, or set up our own if we wanted"
LeadDev: "If someone can let me know how these differ from Teams then I can see if there's value in the company paying"
Me: "Jitsi is *free* free, like no money, and it's OSS..."