I think the jury is still out on this one imo. If Apple does what the rumors are saying and limit it to 500mA @ 5V and 480Mbps transfer speed unless you have a MFI chip in the cable, then I don't think these regulations worked.
Also, if a hypothetical USB type D comes out some time in the future and blows USB type C out of the water in every category, but phones can't use it because the EU said, then these regulations didn't work. It's my understanding that the EU protected against this possiblity, so I'm hopeful that this won't happen. But I haven't actually read the bill myself. I have only heard this from comments on the internet, so I don't know for sure.