Well, it is. Spotify grants you the temporary license to play the copyrighted song for you listening to their ads. They _pay_ for the right to distribute that song. It's like taking something from a store and refusing to pay for it because "that store does not decide where my money goes".
> I am in fact entitled to decide what runs on my computer and spotify is entitled to decide who accesses theirs. If spotify closes accounts for not watching ads and I choose to block ads literally nobody is in the wrong. We are both exercising our respective rights.
Fully agreed.
> On net spotify will save money on bandwidth which is incredibly cheap to start with, gain a modicum of new subscribers, and shrink their supply of free users that are their primary source of paid users.
Well, as said above, they pay licensing fees and that is actually most of their business cost. I highly doubt that they loose many customers who would bring in any money with this move.