It is! AFAIK you can have a bunch of relay servers effectively acting as load balancers. In the nineties / early 00s you had large IRC networks with many thousa

It is! AFAIK you can have a bunch of relay servers effectively acting as load balancers. In the nineties / early 00s you had large IRC networks with many thousands of users chatting in real time with no issues. Well, one known issue was a netsplit [1]. But it did work most of the time. [1] https://en.wikipedia.org/wiki/Netsplit https://en.wikipedia.org/wiki/Netsplit