Currently on the coinmarketcap site only about 1590 projects compared to at times more than 1700 projects. They have left many projects without developers or scam projects. I personally invested in some of these projects and lost a lot of money like bitconect and centra. Do you trust the projects you are investing in and will keep them for a long time until they succeed or are they just looking for profit in the short term?
Yes, many projects now get dead because the ICO did not reach the fund that they needed or the softcapof the ICO. The other one is the ICO is scam, for example the ICO is running and then afterwards the CEO will run, in the same time the money is with him/her. I experienced it!