[hnlmorg]

I agree with you but this is a problem that date backs to the 90s (anyone remember Bitlbee, Trillion, Pidgeon, etc?). Unfortunately incompatibility is seen by businesses a feature rather than a flaw -- despite the annoyances it causes for users.

[sbarre]

At one point the US Govt did mandate interoperability on AOL Messenger, once it became the dominant platform.

So there is precedent for this, but we live in very different times now.