There's plenty of ways around this (if need be) - consider, with 5 super power corporations on a single world such as Earth, there may be red tape preventing the use of We-yu manufactured atmosphere processors on Earth. I mean even with the (non-canon) Blade Runner tie-ins; BR showed us that people were migrating to the off world colonies for a better life - with whole apartment blocks in a city vacant bar those who were unfit enough or too poor to leave the planet. Think of it in real world terms... we *still* have climate change /science deniers in power setting us backwards instead of forwards for their own personal gains, even at the cost of further irreparable damage. Would Prodigy Corp or Lynch etc allow Weyland Yutani technology to be seen as a saviour to the world? It's not good for business, and the atmosphere is shared by all (think of it like airspace), so I'm guessing there'd be significant red tape.