Most of us are willing to sacrifice time for sometimes even small amount of money. For example, I used to wait in line on Black Fridays for cheap deals on elect

Most of us are willing to sacrifice time for sometimes even small amount of money. For example, I used to wait in line on Black Fridays for cheap deals on electronics. After I got a decent job I stopped doing that kind of things but I would probably still wait in line for a couple hours if I can save a thousand dollars. For someone like Bill Gates, he would probably easily PAY $1000 to save an hour of time, so the relative value between money/time is different for everyone. For a billionaire like Gates, he effectively only has one currency left to worry about, since time is the only thing that's important and worthy of consideration for him. That is why I said time is more important to him than it is to rest of us, since he is unlikely to trade his time for anything other than what he truly desires.