RIAA was operating with less than honorable tactics filing civil suits in such a manor that the person being sued had almost no time to respond or get legal representation before a summary judgment would be issued.
What has been the week link was the courts as they still aren't computer, internet and tech savy and took a lot of what was told them by the RIAA as fact when in fact all the tactics used to "find" the violators and methodology used, in reality even under ideal conditions wouldn't yield the results for identification that the RIAA investigators(whom may not have been properly licensed btw to conduct said investigations) claimed.
The big issue that has been raised was not so much whether guilty people were caught, but as to whether possibly innocent people who had legal mp3s were wrongly accused based on flawed data, investigations and proceedures and that the RIAA was conducting the proceedings in such a way as to maximize their chance of getting "settlement money" instead of going to trial. Nothing short of outright fraud just to scare people and get them to roll over. Some may be guilty, some may be not guilty, others, computer illiterates, clueless.
Up until recently, when anyone started fighting back they'd back away and tried to minimize the situation in such a way that the incident would go away and stay under the radar. But that has now even fallen apart as people and the courts become more aware of what is REALLY going on.