I should clarify "The core issue with XMPP was that MSN Messenger, ICQ, etc. had deeper pockets.", is not precisely correct. The core issue is that they had a c

I should clarify "The core issue with XMPP was that MSN Messenger, ICQ, etc. had deeper pockets.", is not precisely correct. The core issue is that they had a captive audience, continual popups and enormous barriers to entry against better technologies, allowing them to bully others out of the market. Another closed network.