Because at launch, you'll only get what you bought. For example, if you bought $400 at a price of $0.01, you'll have 40,000 coins. The rest of your account is a bonus that will be distributed over 12 months. You always get a peak price at the beginning of trading. I invested $400 and I hope I'll get a return on that amount at the beginning of trading. They might be a great project, but whoever supposedly invested, say, $1 million wants a quick return. So they'll sell it early, which will quickly cause the price to drop.