What's happened in the last 5 years is the rollout of multiple streaming services (Tidal, Apple Music, Amazon Music) and the partial collapse of a few players l

What's happened in the last 5 years is the rollout of multiple streaming services (Tidal, Apple Music, Amazon Music) and the partial collapse of a few players like Pandora, SoundCloud, LastFM. The real challenges to creating music platforms are music licensing and being able to create enough revenue to offset licensing costs. Enough people have left Youtube or the labels that licensing systems are now common at the large players. Expect that the advertising players without them to build/acquire them in the near future (Facebook purchased source3 to do that about a year ago). The big push over the next year is to update these systems for the Music Modernization Act, which was passed in 2018. The other big change is expanding internationally and getting music licensing to work with each country's laws and regulations. I'd expect a new streaming service to appear in the next 5 years and at least one to collapse. I personally suspect that there's going to be a continued increase in services that help artists monetize, especially self-published companies.