> Why does the legal system allow settling class action suits?
Because when all the basic facts are the same, it makes *a lot* more sense to have one trial covering 64,000 victims than it does to have 64,000 trials. The *only* people who benefit from having all those unnecessary trials are the lawyers. If anything, class actions are less profitable for lawyers than the alternative.
Furthermore, unlike this case (where each plantiff suffered substantial harm: tens or hundreds of thousands of dollars each), imagine a case where the harm suffered is small-but-nonzero. (For example, a few years back, the music CDs with the rootkits on them. For most people, the harm is the cost of the CD, around $15. Maybe twice to four times that if you want to include the cost of rootkit removal) In those cases, nobody in their right mind is going to spend hundreds or thousands of dollars to file a lawsuit to recover $15. So the victim's choice is a class action suit or nothing at all.