[another-dave]

> If you are being compelled to serve users that are unprofitable, a clear implication of the GDPR, then you are compelling free ridership.

Facebook are the ones who've structured their business like this though — they could profitable with a subscription model instead, they've just chosen to make their product free at the point of use.

[alkonaut]

Exactly. There is no one proposing anyone provide anything for nothing. It's only one particular transaction that is disallowed. You can show dumb ads, use subscriptions and also freely target based on info that people are aware is used for targeting. That's by no means "free" in any of those scenarios.