I honestly don't think this is necessarily the case, i mean if you had 1000 people looking in micro random 64 bit ranges, inevitably, one of them is gonna land on the right range and solve the key.. Although no one really knows if that was what happened, but you have to know that the bigger the range, the more it's gonna be about luck than about computing power .. you need couple hundred Telsa 100 to solve puzzle #120 within two months .  If such computing power was available to a single person already, he would have sold more than just #120 .. he would have used them to crack open small range puzzles as well .. so i guess those who have huge computing power are busy doing something else making them way more money than our beloved puzzle would .. Lucky for us though, otherwise we stand no chance with our teeny tiny personal rigs