Exactly - you can still have an ad supported model all you want, you just can't be lazy about it anymore. You'll either have to tell the ad network yourself what your audience attributes are and likely take a hit on CPC because of less targeting data, or you'll have to do what people used to do (and some still do) and manually choose the ads you want to run.

It's not the end of the world, it's the end of some business models.