Control-finance, Bidpetite, Elektracoin, Hextraoin, Westerncoin, Ethconnect, Bitbase, will all go before that
Do you remember Satoshi"s quote: Decentralized = Better? I think the opposite, Decentralized = Holly grail for scammers. No regulations for scammy ICO's, that are grabbing millions and delivering nothing, no regulations for obvious crypto ponzi scams, no regulations for non stop, scammy bitcoin forks that are designed only to enrich their creators. That bitconnect motherfuckers, will run away with hundreds of million dollars and it will be really hard to catch them. After the crash of bitconnect they will start a new ponzi crypto scam and I bet 1 BTC, that those people who will loose all their money with bitconect, will invest in their new ponzi scam without any doubts. That's how greediness and stupidity of people, will make scammers rich. Forex and binary options scams are in the past, now there is a new good opportunity for scammers called decentralized crypto world!
You do realise most of the things you quoted are not decentralised? Just because something has a cryptocurrency doesn't mean it's decentralised. Bitconnect is heavily centralised, control finance wasn't even a cryptocurrency, and the others are carbon copies of bitconnect.
A heavily pre-mined coin with 90% of the volume on their own exchange that they freeze if the price moves too far and tie up much of investors funds up in loans not in the investors control. That is not decentralised. It's actually brilliantly structured if it is a scam, though I suspect that was more out of luck than design.
There are many scammy ICOs but most of them are not decentralised as they start with a huge pre-mine and have few if any developers. You're absolutely right, it's a scammers paradise, but that's got little to do with decentralisation.