Bitcoin's growth began in early 2017 and then it touch 20000. Bitcoin's largest growth is due to the ability to trade with tether dollar. With this growth, a huge growth in ICOs appeared. Nowadays about 30 ICOs are added to the market. This huge volume of ICOs, has taken the power of bitcoin growth. Like weeds next to a tree. Bitcoin will not grow until ICOs exists.
Bitcoin will definitely reach 20k, but that requires a long process, because the current market is falling. Ico is not the reason bitcoin will not grow, but because crypto is currently experiencing a decrease in trust. Be patient, because the increase in bitcoin is not as fast as last year.