Cost to build on nostr will trend down significantly once we have components and boilerplates for various languages. Plus a lot of it is already open source. Professional services down the road will allow anyone to build on nostr.
Discussion
💯 yes. We are definitely living in interesting times, with progress driven by a distributed flexible platform, oss, permission less access and most importantly a global money.
We just need a music playing client.
Notes which contain music
And relays which will feed that music.
We could own/buy/stream from any relay and once doing so, like torrents, share it back out. The notes could contain links to paying the artist directly.
Existing record labels or artists could create their own relay or have one hosted containing their music collection.