The zaibatsu were similarly interwoven with the Japanese state through WW2, when the connections were cut during the US occupation. While Sony, Toyota, Mitsubishi, et al. are very large companies and have the corresponding influence any such large company would have in any developed country, there is no comparison with the dominance of Samsung, Hyundai, and LG of the Korean economy and politics.
Mitsubishi UFJ is Japan's largest bank and the world's second largest bank holding company with ~$2tn of deposits.
Mitsubishi Corp is Japan's largest general trading company, and includes active business lines covering business services, consultancy, infrastructure (airports, railways), asset management and finance, energy trading, primary extraction of metals and minerals, heavy machinery, defense contracts, ships, chemical manufacturing and trading, as well as retail.
Mitsubishi Heavy Industries separately manufacturers airplanes, air-to-air missiles, helicopters, aerospace turbine engines, main battle tanks, nuclear power plants, gas turbines generators, LNG carrying ships, cruise liners, space craft, wind turbines and desalination equipment.
MHI's subsidiaries also include Mitsubishi Chemical (which is Japan's largest chemicals company), Nikon Corporation (cameras, optics etc), and Mitsubishi Motors.
This is nothing like Philips/Airbus etc.
It all does wonders, but it’s not always enough.
memories of my beloved Mitsubishi Diamond Pro 21" CRT
As supporting evidence... about 10 years ago I was staying at a hostel in Seoul, I went to buy a bar of soap at a convenience shop. I realized as I was getting ready to shower that the soap itself was made by LG!
Probably completely banal for Koreans but to me it was equivalent to Tesla manufacturing basketball shoes, completely left field.