Not every year, the price of cryptocurrency will rise at the end of the year, because the price of crypto is not determined by time, but by the buyer.
No it is not true that every year end crypto holders become rich it was purely based on market condition and value. but unlike end 0f 2017 this year was not enough profitable to investors and most of them are not earned a lot from crypto. So this means profit or rich is not determined by specific time or year end it based on market condition.