Then focus on the people that do want it - which by the count of the number of people who say no to Facebook tracking on iOS, is a very high number. Enough to be of material impact to Facebook's bottom line.
The law does not allow Facebook to refuse service to those saying no to tracking. If they were faced with that choice, I am sure most users would've made a very different selection.
Free services may exist perfectly well:
- They must not invade privacy without obtaining consent
- They must not transfer personal information to jurisdictions with privacy controls which are too lax.
If a business relies on doing either of those two things, it deserves all the problems it has.