Sure it could be done on straight walls, but OP didn't want straight walls, they wanted a geodesic dome 
I fail to see where this "extra material" is being wasted, unless the dimensions were just big enough to make OP buy extra materials and have lots of leftover - such as another roll of hardware cloth, only to use a fraction of it to finish up. Triangles on the dome look approximately 20sq ft each in terms of surface area - that's very comparable to an 8'x8'x8' square structure (300 vs 320 sq ft)

I fail to see where this "extra material" is being wasted, unless the dimensions were just big enough to make OP buy extra materials and have lots of leftover - such as another roll of hardware cloth, only to use a fraction of it to finish up. Triangles on the dome look approximately 20sq ft each in terms of surface area - that's very comparable to an 8'x8'x8' square structure (300 vs 320 sq ft)