The study included sales and jobs data reported by companies in 45 of these industrial groups.
Two other big industrial groups have built networks as well.
The industrial group showed the only strength, increasing by 2.6 percent, to $20.1 billion.
Eight of the nine major commercial banks were also controlled by these same industrial groups.
Thus, said the court, it was illegal to issue rules that neither the public nor industrial groups had seen before.
"Everybody was part of it, including the big industrial groups."
He managed the business for two years until its takeover by a major industrial group in 1972.
On the other hand, they provide extra means for big industrial and commercial groups.
Currently no large industrial group is making investments in Europe.
Large industrial groups have already started to restrict their use.