And global warming is bad???
This is what happens when people have too much money and have had their minds inhibited by science fiction...
Are these gentlemen planning on importing the stuff to Earth? If so, how much?
Consider:
1. If it is profitable it will continue for many many years.
2. If it is profitable it will expand until it reaches economic saturation.
Then we will have a lots of stuff being brought onto the planet, which will affect, very minutely, the gravity of the planet. Which, in turn will affect (a) the Earth's orbit (there goes all that Climate Modelling), and (b) the orbit of other bodies close to Earth.
I know that this comment will be met with derision and I will be called an idiot and scientific illiterate, but consider the long term prospects. Our ancestors 10,000 years ago started to burn wood to keep warm, and then in the 19th century industrial scale coal burning started our path to Global Warming...
Will this then require that we dump stuff in orbit? Or beyond? Solved the 3 body problem lately?