Has instant messaging declined in popularity from it's heyday of ICQ, AIM, MSN messenger etc? I spent hours chatting on those things, but nowadays seem to get

Has instant messaging declined in popularity from it's heyday of ICQ, AIM, MSN messenger etc? I spent hours chatting on those things, but nowadays seem to get by just fine without. I'm guessing that Facebook Messaging meets the need for most people, but putting IM on the web as a feature within a walled garden is a step backwards for something that was, and still could be, as ubiquitous as email. I think there's still a gap for someone to innovate in real time messaging. It hasn't really moved on in the last decade as a concept, but I have yet to come across any other platform that replicates the immediacy and connectedness that you used to feel on those long ICQ and MSN chats.