I agree that the $10 quintillion value is dumb--but it's not the cost of getting it to earth that determines its value. I.e., if it cost you $9 quintillion to g

I agree that the $10 quintillion value is dumb--but it's not the cost of getting it to earth that determines its value. I.e., if it cost you $9 quintillion to get it here, it's not like you could say $10 quintillion - $9 quintillion = $1 quintillion in profit. The limiting value of the asteroid would be the total addressable market for those materials. I.e., if the total addressable market for nickel on Earth is $63B, it doesn't matter how much of it you bring back, your haul won't be worth more than $63B.