lotus_eater
You know why Dyson Spheres are theoretical is not because of the money or them covering the sun, but because we fo not have a material that can withstand the power of a sun rights?
Money and material is definitely a factor. Imagine if we did have a material that can withstand the power of the sun, now we need that amount of material times the circumference of the sun. In this case there is a miniature sun, thus the engineers and scientists can try to come up with a material to create a working combat oriented dyson sphere. I used a material that is pretty much equal parts real and science fiction for the very point your comment made. short answer, yes