Series of tokens have been developed and some are still in the ICO. Those that have been completed and listed on exchange are really suffering a big blow in term of loss of value in the exchanges. The new ones are scared of being listed on exchange at the moment because of the market situations at the moment and the effects it could possibly have on their tokens' value.
Because the market is looking more and more like the dotcom (Internet) bubble. A new project born this year can of course succeed in the long term, but don't forget about the crashing of many dotcom companies at the end of the nineties. The situation of the cryptocurrency market right now is very similar to the dotcom bubble. Many think twice before entering the market.
2018 is a deciding year. It was kind of expected though.