It's too early to tell us about ICOS operations in 2019. The ICOS will only live and develop when BItcoin is priced high and stable so i expect the crypto market to recover and the campaigns coming. ICOS will be good in 2019 as well as scam ICOS campaigns will end.
ico's doesnt depend on bitcoin or on the price of bitcoin because ico's are under the influence of eth , therfor we can trully say that ico's will only depend on the performance of eth . if eth is doing good and its value will increase then we can also expect for a better success of an ico's .
but i did agree on you when you say that ico's wil be good on 2019 because every year we can always expect a good time for every cryptos ( that includes eth ) but i dont believe on the fact that scam ico's can easily end . scams are normal and always been a part of our ecosystem , if a scam is busted there will always be another scam created by bad people .
ICO is not dependent on Bitcoin or Ethereum. ICO is a startup and cryptocurrencies are just tools to collect money - in other words - it is a modern type of crowdfounding. Regardless of what will happen to the cryptocurrency market, this form of collecting money for launching the project will develop.