Prime has just added ads in Australia and the one ad during The Boys last week was a three second ad for Prime Video!TBH I dont see the issue with the subscription + ads, I get why people are upset, because it's not how it was and now you pay more for a worse service, but it's basically how subscription tv was right, you subscribe to the channels and get ads pretty frequently during the shows too, imo it's like the same thing.
The bigger issue I have with streaming is that they have basically stopped producing physical media so let's say Netflix makes your new favorite show / movie, there's a pretty good chance unless you board the pirate ship that in 20 years you wont be able to watch it anymore.