It doesn't matter as much as you think. Office workers around the world are using email(/IMAP) just fine. Jabber/XMPP was used today to the satisfaction of ever

It doesn't matter as much as you think. Office workers around the world are using email(/IMAP) just fine. Jabber/XMPP was used today to the satisfaction of everyone when I video-called my 90 years-old relative. All she had to do was to scan some QRCode a decade or so ago when I on-boarded her. XMPP isn't going anywhere. As I wrote in a sibling post, it survived 2 or 3 generations of commercial messengers, and only got better and more relevant in that timespan. It's far from dead. I'll probably be dead myself long before it does.