Original Japanese is literally described as "Related Companies", and I don't see any missing points from the translator.
What "affiliated companies, etc"?
It may be an incorrect translation from the Japanese. He must be referring to Tibanne and the Bitcoin Cafe, which could be said to be "connected" or "related" to MtGOX. "Affiliated" (from the Latin for "child") means "subordinated to" or "owned by"; the subtle distinction may have been missed by the translator.