That was for trout. Eventually the government said, “Whoa, if this is going to continue, you need to develop recirculating technologies.” The industry did that.
Another reason you would want to do it—coming back to the comments by Ruth and Clare—is that you reduce risk that way, or there is another strategic advantage to doing it.
Reducing the risk makes perfect sense. That's what Chile is all about. They were growing their smolts predominantly in lake cages—floating cages in relatively small lakes with a very high number of farms—and the disease issue just got ahead of them. They came to realize that they could not continue doing that. Now they're moving onto land, as has been done in Europe and North America.