The primary sources are still available, aren't they? It's only the Google result that is removed. Future historians could store everything and run their own search engines on top of that.
Yup, but how much of what’s online today will? Bitrot kills, and it seems like a lot of today’s content will be gone long before we are. By conflating the net with the content you’ve avoided that key issue.
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As a related aside, one tool I think people should really use much more often is date filtering in searching. This [1] is a search on google for 'Iraq' from January-March 1 2003. The US would invade Iraq on March 20th. All of those results are 15+ years old now. I'm sure much has been lost to time, but fortunately there is also a lot that has not.
[1] - https://www.google.com/search?tbs=cdr%3A1%2Ccd_min%3AJanuary...
Information parties like Google has goes far beyond what you see publicly, and its not being retained for your benefit, its being retained for Google's, and Google's and your goals are not in alignment.
The sort of individuals using law firms and reputation management services to try to erase information about themselves from public access, are generally going to be the individuals whose information has the most probable public utility. But they're also the individuals who can most threaten Google with lawsuits and other difficulties should they not comply.
The internet is something that will live on long after we're all dead, and it is creating a living chronicle of the times. The more this chronicle is interfered with, the less valuable this information will be. Einstein's 'marital demands' [1] (not what you might think) of his wife would almost certainly fall within this 'right to be forgotten' yet they now provide a all too rare glimpse at the less 'sculptured' life of one of the most important figures in history. This yin and yang, good and bad, nature of people helps provide a more balanced, and less idealistic view of actors in the past - and present.
Perhaps the thing becoming ever more clear is that search is something that needs to be decentralized. It's all too easy for the player in control to exploit the data for their own personal benefit, and they also end up working as a single point of failure for access to said information.
[1] - http://www.openculture.com/2013/12/albert-einstein-imposes-o...