Still making significantly more from Bandcamp/Mirlo than from V4V services but still more from V4V than Spotify etc.

Maybe this is more cultural? Bandcamp and Mirlo attract an audience very specifically into niche and Indie sounds where as Wavlake seems best for songs specifically about Bitcoin.

Here's some Hip Hop I made with my friend Joe back in 2008. It's a niche indie sound and, incidentally talks of ponzi economics before the whole btc thing even happened.