Lars Jensen, a leading expert in the container shipping industry as a “fun fact” found a list of the 20 largest container shipping lines in 1980 to see how many were left now 40 years later.
Listed in the order of their size in 1980 they are: Hapag Lloyd, Maersk, Evergreen, Zim and Yangming.
Additionally there are 5 brand names left, but they are now owned by other lines: Sealand (owned by Maersk, and only recently “revived” as a brand name), CGM (acquired by CMA and became CMA CGM in 1996), APL...
https://mfame.guru/watch-how-shipping-companies-evolved-in-the-last-4-decades/