>A protection racket is an operation where criminals provide protection to persons and properties, settle disputes and enforce contracts in markets where the police and judicial system cannot be relied upon.
Of course, Google isn't threatening anyone with DDoS, (even assuming that they somehow make money of you).
Otherwise though, it's somewhat of an interesting analogy. This is a form of protection (of online property). And you can't really rely on the police to protect you from DDoS. I suppose it would be more reasonable to just compare it to a security firm though.