[Emendo]

At this point, the only browser that could ignore FLoC without being blocked by website is Safari. If Safari chooses not to implement FLoC, it might be sufficient to prevent web developers from blocking other non-FLoC browsers.

All of this rest on Apple standing up for privacy through.. so watch for any announcements from Apple.

[drusepth]

Why wouldn't sites that rely on FLoC block Safari if the browser doesn't implement it?

[bgorman]

iOS is too lucrative of a market to ignore. It is like not selling cars in California. Every car manufacturer conforms to California emissions standards because California is too lucrative to ignore.

[Jonnax]

Websites need Apple. Apple doesn't need them.

[idownvoted]

Because of Market Share.

Which is just another reason – maybe even a responsibility of every web dev - to stop using chrome.

[kristofferR]

Privacy has been Apple's thing the last few years though, very unlike that they implement FLoC.

[readams]

iOS ads use a system very similar for FLoC though. It's unlikely they'll implement it, but not because of privacy reasons.

[stevehawk]

they'll say it's because of privacy though, because it makes Apple fans feel better about it.