The electrical industry accrued great benefits from using PCB infused insulating oils, the automotive brake industry among others made a killing (literally) from the benefits of asbestos. The agricultural industry did very well by using more now banned pesticides than I have time list. Monsanto made a fortune selling dicamba as a great way to sell GMO seeds.
The cruise industry is no different. A few people make some short term gains by destroying people, ecosystems, cultures, landscapes and towns. The bears and seagull populations rise when a dump is opened, does that mean we should be grateful for garbage bears and clouds of shithawks?
Cruise ships in SE Alaska are like garbage bears and shithawks, scavengers and an invasive species.