[PvK]

As for economic aspects, yes Omicron, I imagine, as I more or less said before, that if you can move the matter from many solar systems to one in order to build a Dyson sphere, and build it and get it to work, then I tend to think there would be many other more practical and/or interesting things you could have done with your time and energy. As you say, resource extraction is a much smaller task than the above.

PvK