Comment by capableweb

Yeah, they could do that, but what most of these claims ("X could easily profit Y by doing 50%+1 attack") miss, is that once that attack has been made, who'd trade anything with the currency that was attacked? Lets say nvidia does "conquer" Bitcoin and have all the bitcoins, who'd in the right mind would continue to buy/sell Bitcoins after that? The market for Bitcoin would collapse faster than nvidia could excitedly scream "PROFITS!" to their shareholders, making the whole attack unnecessary in the first place.