Is that comment factual or just hyperbole? Has anybody actually issued writs?
Hyperbole at the moment of course, but I would not want to be the webmaster who was on the receiving end of a copyright holders lawyers wrath. Certainly not the first one.
If a copyright holder, being in the position of having intellectual property for which there is a need, if not a commercial sized demand, withholds it from the market, he may well be acting legally, but legal and sensible rarely co-exist comfortably. It is very much easier to take legal action to impoverish a single well meaning provider of a service than to either satisfy the legitimate needs of providing the service or chase those who used the service as individuals. Good sense has, sadly, little or nothing to do with it.
There is probably a small mountain of old plans that are possibly the property of now defunct magazines, for instance, that have passed to new owners, who, through ignorance or indifference, have effectively binned them. And so they would stay until they resurfaced on the web, when the pound signs would light up.
In a world populated by nice people, such would not be the case, but a webmaster with the urge to survive needs to think of the thought processes of legal, rather than legitimate, people.