Lastly there is no natural cycle, that implied there is demand, there is no demand for these coins.
Altcoins are used to produce more bitcoins, what ever altcoin people think they can use to gain more bitcoins = demand
Yep and that demand flows into one coin, out of that coin and then into another
why do you think you never see 50 coins pumping at the same time?
Thats why you get these cycles
if there were no cycles a coin would pump once and then disappear but many coins pump several times