Interestingly, Yomura Holdings have almost no presence on the Internet at all. Indeed, almost the only reference to them is on forums where people ask who they are. Very odd …
This is entirely reasonable -- one of the reasons Gmane was taken down was constant threats of litigation. Keeping it a separate business entity owned by the same holding company means that a lawsuit aimed at one won't sink the other.
Not unusual though. Many people have holding companies with the sole purpose of separating the them and their "actual" company, in case of bankruptcy. Holding companies like that seldom need an internet presence, or any presence really, they only exists to provide legal protection.
The company I work of is actually owned by a series of individual holding companies, each one hold some percentage of the shares in the operating company. The holding companies mainly exists to protect the owners from bankruptcy.
