I haven’t read the book but as far as I gather they aren’t proposing to restrict the internet as it is, but rather make digital rights for consumers to be able to control and own the data that is given to third parties.
So Google for instance can’t say like “we’ll give you this for free but you have to give us your data”. Instead, you’d probably need to pay directly for Gmail for instance or Google would have to pay you for access to your data. Either option might be better than what we have today.