Many blockhain projects is developing very slowly. Investors must be ready that development takes a time.
In the field of cryptoindustry and technology, it is generally difficult to determine a specific date, understanding this, the deadlines must be taken into account with a possible slowdown, that is, increase the time with a margin.
Development is a long process and to rush means to make mistakes. On the other hand, in order to protect yourself, the project may add a couple of additional years to development, but investors are not ready to wait 10 years.