A little oblique to this article, but...
It would be interesting to speculate what would happen if the Data Protection Act went a little further - as you might logically consider it should, in fact - and specified that personal data is irrevocably the property of the person (i.e. the data subject), and consequently organisations (all of them*, not just Google, Amazon, or whoever else the good commentards deem inappropriate this week) need to licence it to use it.
That licence could be for a fixed period, say a year, after which it would have to be renewed, so that the data owner/subject could validate it as accurate, relevant, and so on (as already specified in the DPA). All at the licensee's expense, not the data owner/subject's, of course.
Just a thought.
* EU, HMRC, GCHQ, all spring readily to mind, I'm sure you can all add to the list. No need for any of those pesky exceptions for government organisations, either.