A useful analogy, but it's worse than that. It's kind of like someone building a superhighway through your backyard. Let me give a specific example.
I used to participate in an alt.binaries group, we traded fairly obscure music (mostly out of print) and it was a low traffic newsgroup (not in the mp3 hierarchy), so even the top Usenet ISPs wouldn't give it much storage space. So we had a generally agreed-upon posting method, no flooding and each person would restrict their posts to about 500Mb per day. We judged that most of the top ISPs gave the newsgroup about 5Gb of file space, so files never expired from old age, they were always pushed off the server. When we limited flooding, posts would last about a month on the server, when everyone posted faster, they expired in about a week. That seemed adequate, everyone was happy, and if files expired early, most users were happy to repost on request (although more slowly a second time).
So after a few go-rounds with FTDers dumping 1Gb floods, and everybody getting pissed off, some FTD asshole starts a 10Gb flood. Regular users are posting a few albums of maybe a dozen files, and their first file is pushed off the server before the last one is even done posting. The FTD idiot isn't even aware that he is flooding off his OWN files, the first 5Gb is being pushed off the server by the last 5Gb. Now THAT is really goddam stupid.
Obviously the FTDers are not aware of common Usenet limitations. They think a Usenet nntp server has unlimited resources, but it doesn't. In an ideal world, every nntp server would have infinite storage space, that is impossible, but it's a basic assumption of the FTD system. They treat Usenet as an infinite resource, they can dump an infinite amount of files anywhere and they expect the system to handle it. I've seen even worse abuses, some FTD asshole will pick some obscure binaries group and use it to dump off-topic files. It doesn't matter where you post an FTD file, you could post mp3s in alt.bestiality.hamster.duct-tape and the FTD servers would locate it just as easily as if it was in alt.binaries.sounds.mp3.* since their system is designed to handle locating the files. It's indexed on their servers, not under topic categories by newsgroup. They'll dump files anywhere they like, and are answerable to no-one. This has ruined several newsgroups and driven people away from Usenet.
Fuck The Dutch.