No copyright alone afaik stops anyone from abusing said rights unless you tell them to stop.

Would be happy to have counterexamples.

Of course you can't enforce your rights if you don't enforce them.

That isn't what people mean by "losing" the rights.

For example somewhere on the planet somebody is running a pirated copy of Windows 10. But it would be misleading to post a headline saying "Microsoft LOSES copyright over Windows 10!!!".