Nobody wants to play on obviously unfavorable terms.
This is one thing that I find odd. The terms were unfavorable before the stall, but right now anyone has just as much chance to get the block as the bot does.
But the real problem is that the human has to put all of their time into finding the block, but the bot owner doesn't need to because his computers are doing it for him. I'm sure that is why people aren't mining. To them they are wasting their precious time because the bot owner doesn't need to do anything but they do. This is why it feels unfair.