Interesting link.

It's amusing that in the comments someone cites SCSI as proof that coding to a standard can be sufficient. The trade association holds "plugfests" ( e.g. http://www.scsita.org/news_events/plugfests/plugfests.html ) specifically because coding to standards isn't sufficient and sometimes you have to actually try the things out with other peoples' hardware to find out if things actually work properly.