I'm retired with tangible assets and land in quasi rural Australia .. so this is largely moot to me, however ...

What of those interested in retiring to a cruise | floating accomadation ship?

That's a serious question for some, I saw a thing the other night and caught an elderly well off couple saying they looked at many options and shipboard life was cheaper and more interesting (personal opinion) than other assisted living retirement options.

Raises the question of a digital life on international waters > 9 months of the year.