A 15x improvement over mammoth (spot on by the way) is still many times more capture plants than we have power plants. And there's limits to the efficiency of these facilities in terms of how much air they can consume per day. Not to mention the carbon costs of building and operating them.

Maybe I'm wrong, I'm certainly not an expert. It just seems like a hopeless case to me. Even if they make one significantly more effective than this Stratos you mentioned, we're still talking about tens of thousands of them to have a real impact.