Slammin Vinyl became Westfest
Fusion still do some nights down south I think very occasionally.
One Nation hasn't done anything in ages
Fantazia sold the brand to someone who put on a scam festival.
Dreamscape tried to put on a huge event which didn't happen so they went bust.

I would still go to one if it's was old skool in the main room or a sizable lineup in a second room though.