[TeMPOraL]

And then some tackle the logistics problems directly. There's plenty of scientific and semi-scientific literature considering the logistical issues in full; even hard sci-fi pays attention to it. Still, let's not begrudge people from getting inspired by science fiction too much; if people limited themselves to only ever considering the economic gains, the life would be much sadder.

> Meanwhile we have the far more human friendly oceans, right here on Earth, which we haven't colonized yet

Why not both?

Also, I'm not sure the difficulties are 1000x - some of the needs, especially those around closed-loop habitation, are essentially the same; simultaneously, the ocean is a PITA to explore, in a bunch of different but similarly problematic way as space. I'd buy a 10x factor. Ocean exploitation is also hindered by politics and justified fear of environmental damage. In space, there isn't much to damage.