I remember the glory days of Adium. A single app that connected to every chat service. If you had told me that many years later my plain text messages would be lost in a sea of different incompatible services, I'd think you were crazy.
Today my messages are split between Facebook Messenger, Skype messenger, iMessages, plain SMS messages, WhatsApp, LinkedIn, Twitter DMs, short emails. And even sadder, it's often the same people sending messages to me on whatever they happen to have open. If I want to check a bit of info someone sent me, I have to search our chat across 5 different incompatible messenger services. Utter insanity.