And I did enjoy finding new artists through the algorithm there .. but I do made up my mind about letting go of the concenience and owning all my music again. It is a big effort, though and I don't enjoy it so much like you.
Almost like how people who haven't moved out of their hometown cite all sorts of reasons or apparent faults of the place they haven't moved to, like it's too expensive; it's too rainy; it's too busy; it's not sunny enough; but really, they weren't in the business of leaving anyway, because they're comfortable or don't know how to make friends, or they stubbornly try to love a place they actually hate, or they have family there and a support structure, or they have no ambition, or they actually just like the place. Either way, the moving goalposts and random critiques don't matter, it's not the hypothetical destination's burden to court someone who won't make that leap anyway, but there may be a select few fence sitters who are just waiting for a push.
I don't think Spotify's main objective is to persuade hobbyist music collectors to stop, but rather it's to persuade people who want to access music anywhere to pay for the service, which may or may not be someone forced to ditch their vinyl collection or Zune. Voting with your wallet only matters if the service you actually might pay for or are paying for stops being a compelling product.