New altcoin-scams will continue to emerge as long as premine and similar scam techniques will work. The end for most of these coins is clear: They will become untradable and disappear. That's it.
Yes, I am not foreseeing any possibilities from crypto people to understand the facts of why they need a special coin just for one reason. Many devs are coming into different accounts and writing here about their fake success stories just to lure innocent people to get them into altoin trading/ investing into ICOs.
But there were a serious discussions about do we need altcoins or not and the consensus was similar to we need altcoins. Probably they are working as market movers like attracting new people into crypto world for some reasons.
It is decentralized system, people come with their projects for their own intentions and conscious people protecting themselves and amature people learn that after few experiences.