That's how Bitconnect earn their profit. see my video explaining it. You can better holding BCC as well instead of BTC.
https://youtu.be/mMbH8UAXm84What happens if the price of BTC goes down instead of up? Is that when Bitconnect runs off with the money?
Remember the initial BCC coin been invested? they Sell your invested BCC at high price and buy BCC at low price many times over. That's why it is perfect buying low and selling high scheme in Bitconnect side. BitConnect will not run because you know why? It still have 21 Million coins to mine which is worth more than billion dollars. They earn by staking their own coin, transaction fees and their buying low selling high trading.