You can record what you play from Spotify and you are already free to play the record again and again and again without the artist being paid.

Most people do not because they find it less convenient than paying 20bucks a month or whatever is the current price in 2025 but that doesn't change the reality.

For most people the appeal of Spotify is not the music itself but the playlists that are shared thanks to its ubiquity. This is the reason other services struggle to make a dent even if they have better quality, UI and algos.

Spotify started by disrupting the market using pirated music by the way so you are pretty much endorsing and encouraging piracy when "paying" your favorite artists through Spotify.