Perhaps not, but you can scarcely argue that going from 17.4% of the world’s flagged vessels by tonnage to to less than 1% has been what most people would call a ROUSING success. And that’s even counting US military specific ships (the military sealift command to-ro ships, hospital ships, fleet oilers and similar that are civilian manned), ferry boats, etc.

https://sealiftcommand.com/about-msc/ships-msc

https://www.ics-shipping.org/shippin...hipping-flags/

https://www.msc.usff.navy.mil/Ships/...l-on-Roll-off/