The Bitcoin market cap grew from $1 billion in 2013 to $65 billion today. The larger it gets and the more exchanges exist, the more difficult it becomes to cont

The Bitcoin market cap grew from $1 billion in 2013 to $65 billion today. The larger it gets and the more exchanges exist, the more difficult it becomes to control/cheat the price with a fraudulent bot like MtGox did. You seem to be confusing legitimate bots (written by traders to use an exchange's API) with the MtGox fraudulent bot (which was using fake dollars injected in the trading engine by Karpeles). These are 2 very different things. Of course legitimate bots exist, but I don't believe that any big exchange today (including Bitfinex) runs fraudulent bots capitalized with fake money.