The service in question from OP is not using Spotify's API so no license applied. It sounds like they're automating/scraping, which in the US at least, was just

The service in question from OP is not using Spotify's API so no license applied. It sounds like they're automating/scraping, which in the US at least, was just ruled legal.[1] Of course, that puts scraper and scrapee into a leapfrog contest. As OP points out, the best defense against customers leaving is to actually listen to them and please them. In this area, while Spotify might have a giant catalog, they are blatantly tormenting users by removing obvious, simple, features demanded by the thousands of votes on their forum. 1. https://www.forbes.com/sites/emmawoollacott/2019/09/10/linkedin-data-scraping-ruled-legal/#63de0f6f1b54 https://www.forbes.com/sites/emmawoollacott/2019/09/10/linke...