Don't forget, that this was also in the middle of the various look-and-feel lawsuits that were going on at the time. Lotus vs. Paperback Software, Lotus vs. Bo

Don't forget, that this was also in the middle of the various look-and-feel lawsuits that were going on at the time. Lotus vs. Paperback Software, Lotus vs. Borland, Apple vs. Microsoft, Stac Electronics vs. Microsoft, etc. Also, remember that PKarc was popular because it was faster than Arc. The feeling in the BBS community at the time were feeling a bit of rage, that a superior product was being killed through the courts. So when PKzip came out, which was not only faster, but had a better compression ratio, combined with the general sentiment in the community that were fed up with look-and-feel lawsuits, doing a mass conversion from arc to zip was also a form of public protest.