I also think the antitrust suit (and many more) need to happen for more obvious things like buying out competitors. However, how does publishing a list of valid IPs for their web crawlers constitute anticompetitive behavior? Anyone can publish a similar list, and any company can choose to reference those lists.
https://www.404media.co/google-is-the-only-search-engine-tha...
Whether by IP, user account, user agent, whatever
It may not be the kind of explicit anticompetitive behavior we normally see, but it needs to be regulated on the same grounds.
The website operator can do with that identity as they wish.
They could block it, accept it, accept it but only on Tuesday afternoon.
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"Anticompetitive" would be some action by Google to suppress competitors. Offering identification is not that.
The law may need more time to catch up, but search indexing will eventually be made a utility.
And that has an argument.
But in the general case no.
It's all the guise of feelgood stuff like "make sure it's google, and not some abusive scraper" language. But the end-result is pretty clear. Just because they have a parallel construction of a valid reason why they're doing something, doesn't mean they don't enjoy the convenient benefits it brings.