It seems that Cogent have made allegations that must, at best, be commercial in nature, and may amount to some breach of contract, if contracts prohibited traffic shaping. Surely there is nothing criminal, and surely only something criminal could possibly justify any sort of "raid".
The accusations appear to be "alleged uncompetitive market practices by the three firms." and "The "throttling" made Cogent's services appear to be slower than those being run by the European ISPs, it said."
If the ISPs have a contract with Cogent, as many do, that may impose conditions. But ISPs do not have contract with Cogent if they do not want to. If Cogent do this sort of crap, then why would any ISP risk dealing with them.
It is almost worth calling for all ISPs to block all traffic via Cogent. It would be easy to do, and if it is legal, it would put them out of business. I am not calling for such, but surely actions by Cogent that are causing some major ISPs problems, "raids" even, could lead to that sort of action from the ISP community.
If not a contract with Cogent, then, as I understand it, any ISP and anyone running any corporate network or their own firewall, can choose to slow or block any traffic they like based on any criteria they like. It is common, and completely normal, to "prefix stuff" and use other metrics to steer traffic via carriers for commercial and technical reasons. It is not a big leap to shape traffic via some carriers.
If we did link to Cogent directly, we could choose to do so via a 10Mb/s link which would be full and make all Cogent traffic look slow. That is not good for our customers, so we won't do that, but I cannot see it would in any way be illegal and justify any sort of "raid".
If that sort of thing was illegal, then you have all sorts of issues. ISPs could not risk any links getting full for fear they were seen as running an over capacity link to make the carrier look bad. A DoS attack could put you in breach of a law.
Heck, there are ISPs blocking people based on court orders based on commercial interests of copyright holders. ISPs providing services to schools block all sorts of traffic. ISPs shape all sorts of traffic for all sorts of reasons.
As far as I know, whilst ideals of "net neutrality" have been discussed, they are not a legal requirement yet and fraught with complex issues in defining what would and would not be allowed. It is a complicated area, and one to which I do not know the answers.
It will be interesting to see how this pans out.