So just as our growing phone system constantly needs more area codes, the Internet needs more domain names. We need to reconcile this in a way so that even if you lose something, you feel the process is fair. Every time you work on something revolutionary, it's not easy to do. Larger issues are contentious as well. New sites are getting longer or harder to remember.
New suffixes mean more choices.
Cars.music might go to The Cars rock band. Cars.fan might reach a fan club. Cars.news might report on the auto industry.