What is the fine-grained topic of the following text: Now, it’s true that these plans are less lucrative for the company – but Spotify has been quite clear about them functioning as an entry point: the hope is that some of the kids and students who grow up, move out, and get jobs, will have become loyal listeners, and shell out for a premium plan of their own. Only return the topic.
Spotify's strategy of using less lucrative plans as an entry point for future premium subscribers.