In our opinion it comes down to the fact that they don't control the internal environment of those floating facilities. There is still a lot of exchange of water, untreated for any of the concerns in the ocean, such as phytoplankton or low oxygen; it's still coming into the facility. Even though there is some ability to moderate this, it is still something they have to deal with, whereas in the recirculating aquaculture systems you pay the technology price, the capital price, but you have full control over the water your fish are growing in.
On November 1st, 2011. See this statement in context.