The one thing I'd like all spotify like services to have is a way to export play/like history in a standard format.

I've listened, liked and disliked so many songs in so many services like pandora, rdio, grooveshark, last.fm, spotify, tidal. But all that information about me is locked and I cannot use it.

If these companies offered exporting of this data in some standard JSON format, we could develop open source apps that analyzed the history and provided recommendations.

You can perform a gdpr data request, which should contain this data.

Alas, I don't reside nor am from the EU .

They have the scripts to generate these exports, so they probably will give you an export. You can always claim to temporarily reside in a hotel in the EU, it's not like they can smell this isn't the case.

I found this: https://github.com/caseychu/spotify-backup

You can export your account and there is also an API. A few API clients in various languages can be found on Github.

You can just use build-in "export account data" feature for that

I used this service once, it worked as advertised: https://soundiiz.com/