You're thinking of all of the chaebol/conglomerate companies combined, so Samsung, LG, Hyundae Kia, Posco, Hyundae Heavy Industries, SK Group, CS Group, Lotte, Hanhwa, Hanjin, Kumho Asiana, Doosan, etc., each of which have multiply companies in their portfolios and are serviced by groups of smaller local firms specialized in support for one or a few of the big ships.

But, do they feel above the law? This is certainly a common complaint of South Koreans. These groups are definitely "too big to fail" and they know it. So yes the concentration of power in a few giant firms is remarkable, and not in a good way.