Yes u are right ICO give's a big impact on bitcoin price but this the part of business and if we talk about bitcoin price will not hit $20000 because many countries are planing to ban and regulate bitcoin so investors in double mind situation also supply and demand of bitcoin is responsible for bitcoin price growth so we can say this price of $20000 will take time to hit this target.
We cannot predict the increase of bitcoin price, so don't expect too much. Maybe bitcoin price reach its peak before the year ends, just like last year. There are many more months remaining, many more things will come to bitcoin. The best thing to do is to buy more bitcoin when the price is low, then hold it and wait for its increase to happen, for you to earn bigger profit.