"Spotify forces you either to pay, listen to ads or to find unofficial, potentially dangerous versions to use it."
I don't think the company forces you to do anything. It is their business model, how they can provide copyrighted music to you and have a share of the pie too.
I'd say the very idea that Spotify is forcing you to pay with time and attention or money so you can have music conveniently streamed to your devices is a testament to the company's success. It created this business model and fulfilled an apparently basic need to the point you think that charging for it is unfair.
But "forcing" is too much. You can always buy discs, digital downloads and so.