I like how you wrote "solves that" when the product is not there, never was and probably never will be. Your article was from 2011 and the company which should have made this thing real now invests in: Ocean thermal energy conversion and Floating wind turbines

https://www.naval-group.com/en/activities/products/#

Hilarious.

It's where the subsidies are, flexblue took a hit from Fukushima as did other efforst but the concept does resolve the issue of availability of land and addresses a lot of cost issues via serial factory production.

Rn the most promising efforts to watch concept wise IMO are nuscale and russia/china's floating concepts.

Looks more like they took a "hit" from reality realizing where the cheap energy is coming from these days: renewables.