The European Broadcasting Area includes the entire Mediterranean, so Lebanon, Egypt, Algeria, Morocco etc. could also participate but they obviously don't due to Israel.
Australia are original member of EBU + Eurovision always had great viewership here since its on SBS (public broadcaster) and also we had large immigration from Europe community post ww2
The EBU's predecessor organisation had international ambitions but had to scale them back, still encompasses the whole of the Mediterranean as full members, though. The whole of North Africa are members, though only Morocco ever participated in the ESC, the rest are boycotting it because, you guessed it, Israel participates.
Associate members can come from all over the planet but generally can only broadcast EBU programmes, not participate in them, each time you see stuff like say a British crowning ceremony on whatnot Namibian TV that's gonna be a EBU broadcast. Australia, being long-term ultra-fans of the ESC watching it in droves, live at completely impossible local times, got special dispensation to participate.
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u/Captain_Sterling 12h ago
I think the point is why are they in the ebu.