Because your coins is bullshit too,that is why there are no improvements,HOLDING good altcoins and tokens will give you a lot of profits but holding these shitcoins which doesnt have good working product/services wont give you anything even you waited hundreds of years.
What a harsh thing to say but clearly direct to the point, maybe if you take some diligent DYOR and get some good coins on it maybe you gain big earnings by now for that time you allotted on holding those coins. I guess you've just made some wrong choice of coins to hold, but it is not too late is just an eye opener for you picking up now good coins for holding.