There are web crawlers that retrieve the data and store it, then making it available to everyone. Once it's here it's in the world, and removing it only from here is pretty much irrelevant.
As the web currently stands, if you put something on it you have already lost control, so framing the question as one of "owning your own data" is misleading.
I've up-voted the question because I believe it's important and should see a discussion of how future systems might be able to handle this, not because I agree with the implicit sentiment. Personally it would be fascinating to see a real world implementation of the "Oubliette" as given in Hannu Rajaniemi's novel "The Quantum Thief."
As the web currently stands, if you put something on it you have already lost control, so framing the question as one of "owning your own data" is misleading.
I've up-voted the question because I believe it's important and should see a discussion of how future systems might be able to handle this, not because I agree with the implicit sentiment. Personally it would be fascinating to see a real world implementation of the "Oubliette" as given in Hannu Rajaniemi's novel "The Quantum Thief."