Bitconnect looked like a pyramid scheme from early on, and it had a ton of warning signs. If you missed the fact even a ton of people on youtube told everyone that bit connect was a scam, so you didn't even need to notice it yourself.
I want to know why people got involved while knowing that it was a HORRIBLE scam from early on?
Humans are greedy and hungry for the money. In this world where the money is the spinning wheel that turns the world around the false promises that look absolutely fantastic to the individuals can be very attractive to the same. Bitconnect promises and plans were too good to be true but this certain type of the people in the search for the easy profit is not worried about the possible scams. For them, the scam is something that will not touch them! These type of the people are actually the ones that were hoping to get on the in another train like the Bitcoin investors in 2010 did.
Even if the reveal has shaken the investors there will still be a lot of more projects and coins that will attract these greedy types of people because of the easy profit smell that is unavoidable for them.