The simple explaination is that some players don't know when to stop bidding and exit an auction before it turns ugly with tokens bid and also the amount of game $ needed to sign the player and they just keep bidding without realising what they are getting themselves into. The auction system is designed like this for people to bid 1T at a time for every knockout round they bid, It turns into a pyschological "its only 1 more token to bid" scenario.