If Bitconnect is a scam it is a very lucrative one for the people putting it on. Why would they want to shut it down?

Further, the returns are not guaranteed for the majority of the loans. I imagine 90%+ of the loans made are $1000 or less. For those at $1010 and above, the interest structure is no different that a CD at a regular bank.

I predict the rate of return will diminish significantly until it is no longer attractive.