It's true that crypto projects, just like any other companies in the world, need time to grow, expand, develop, make partnerships, do marketing and so on.
Sadly most investors connect the crypto market with quick flips, just look at all those IEO's. People buy those coins and even use bots to sell them as quickly as possible once they can be traded.
I personally only buy cryptos that i want to keep for a least a year, which has to do with tax regulations in my country too.