If you wrote it, outside of employment, you hold the copyright to what you have written. I believe that is so internationally.
The hypothetical companies publishing that writing are breaching your copyright.
Even if you were commissioned to write a piece for a particular purpose, it is likely (by my understanding) that you still hold the copyright, and the hypothetical companies are still breaching your copyright by using your work for an unlicensed purpose.
What are your cost estimates if I treated it as a copyright issue and just start suing everyone in breach as a private citizen for something I posted for free for everyone?
In theory, your suggestion works. In practice, copyright laws are more intended for companies and lawyers while privacy laws are for individuals.
edit: The right to be forgotten doesn't mention if there's also a copyright violation I can't invoke it.
Suppose I wrote something on the internet a long time ago. And now it's being replicated by companies who make their money by selling ads.
Now my words are being used to sell products I don't even like. I'd rather have whatever I wrote be deleted than for someone to think whatever ad is showing might be relevant.