On the shippers, obviously they can float away to another port, so they are untaxable. And yet, there is a tonnage tax, and those shipping companies report gains on the Athens stock market. That being said, the shipping tycoons typically strip away the cash position for themselves and so, these companies yo-yo in the market.

However, it's my understanding that the shippers are in arivalry, and they have built conglomerates inside Greece, with media and especially banking.