The amount of people here outraged that Spotify is preventing them from blocking ads on the free tier is astounding. Pay for the service if you don't want ads.
+1 spotify literally costs (per month) < 2 venti lattes from your favorite cafe, and less than a beer at most bars in NYC and 1/2 of this thread is complaining
I'm one of those that are complaining, but at the same time I pay for Spotify, Netflix and HBO GO, and I didn't pirate almost anything for years. It's not about the cost, it's about their obsession with control. If they can't provide free service without privacy intrusion (monitoring what you do with the data they send to your network) they shouldn't provide a free service at all.
I think the outrage is more so that Spotify thinks it can tell you how your computer is operating. Other companies have found ways to circumvent adblockers, which is the route they should be taking here... Not telling users that their computers have to conform to some set of standards so that they can inject ads into your experience.
You can buy (rent, access, whatever) their product with one of two forms of payment: money or ads. If you don't like how their ads are delivered (admittedly fair) then pay, if you don't find either of those acceptable then you don't get their product. Disabling ads is requesting a completely free third option, which isn't something they choose to allow.
I don't understand the entitlement you seem to feel to demand that third option.
I think that you are mistaking me explaining other people's opinion on the situation as me saying what is right and what is wrong. The two can be (and are) two independent things. Being able to comprehend multiple sides of the argument doesn't mean that I am entitled, it just means that I don't think it's as black and white as you seem to.