let me get this right?
"iWhat if we find an asteroid made of minerals........."!
""And what if we found out how to build a perpetual motion machine "
"And what if we also built teleporters that used that energy to teleport spaceships into orbit and back?"
So basically 3 !what if" arguments that are based on science fiction are supposed to convince me that mining asteroids will be somehow profitable? Despite citing one example a "perpetual motion engine" which can never exist. Also inventing teleportation seems to be a sticking point for you too LOL No sorry i am still very sure this will never happen until we have colonized some planetoid near such an asteroid.
I agree with your conclusion. I was parodying the pro-asteroid miners.