Too much great if it will happen, but I don't think ! 4000$ is too much, you say that market cap will increase of 60.000.000.000$ ! (more or less)
This doesn't mean that we need $60,000,000,000 to get there. If the orderbook has almost no sellers you can get to $4000 with a small ammount of money. Ofcourse we still need a lot, but way less than $60,000,000,000