but if someone did produce gold commercially and was succesful, it would loose value, but would still be a very good non-corrosive metal for industrial and other applications. it's also almost as good a conductor as silver if i remember right, better than steal or copper. ever wonder why premium A/V cabling has a gold tint to the metal on the plugs?
but yeah, the value would drop, meaning whoever produced it woudl have to constantly make their operation more efficient, by like several hundred percent. maybe it could be done, but it is fusion after all.
and now that I think about it... fusion doesn't make gold like you think it does. once a star fuses iron, it suddenly takes more energy to make fusion happen than will come out of it. period. when iron forms in a star, it's a very small matter of time (minutes) before it supernovas. however, the massive supernova explosion smashes enough to gether to make elements heavier than iron, including lead, uranium, and GOLD. You wouldn't have to replicate the inside of a star, you'd have to replicate the inside of a supernova, the most devistating naturally occuring explosive force mankind is aware of!
entreprenuers, get to it!