[altacc]

It was probably mostly about cash balance for the company. I once worked in a company that was a niche business but very profitable and with predictable cash flow. That made it very quick and easy to sell when needed, basically a tradeable asset. Twice in the space of a few years it was sold when the current owner wanted some cash and another had excess cash. Sounds like this is the case with Bandcamp.

In my middle management experience, being profitable and owned by a company that didn't share the business domain was best as they mostly left us alone as long as we were profitable. When they finally got bought by a similar business, that's when they tried (and failed) to merge jobs. I've since left but they've recently been spun out yet again.