||The Google Code Jam and all private label events are executed by TopCoder for the company that is sponsoring the event. The rules, who can participate, the data collected etc. are decisions for the sponsoring company. The data collected isn't TopCoder's, and it may not be the same data as TopCoder collects. The sponsoring company may not want participants to have to become TopCoder members. The sponsor may not want the rules to be the same as TopCoder's normal rules.
These events seem to be somewhat confusing conceptually for regular TopCoder members. The thing to keep in mind here, is that they are not TopCoder competitions, TopCoder is simply providing a service.