Shoutcast used to be such a hugely vibrant wild scene of so many things happening. And tons of it was all ad free or nearly so. There is an order magnitude less going on, and it's much more commercialized now. I don't think there are great replacements.

Somafm was such a a particularly great example, of having a specific vibe. Many of them! Suburbs of Goa is probably my favorite; good energy & beats mixing.