This is a bit tricky because sometimes a coin has very high price after the ICO because people think to hold for a longer time.
But sometimes after one or few days the price drops very low like the LISK which I watched how the price is dropping and it was more than 50-70% lower than the ico price.
So much better for now that not to hold for more longer days for those ICO coins since mostly of them will last only for few days and suddenly dump, but as lisk mentioned if you really follow the progress of that coin at the very first addition in yobit you can earn huge money for that time since the price of lisk was surging at upper thrend at that moment but sadly as other ICO's did it was been massively dump as it is.
If more and more coins are being produced the less their value will be because traders can't focus on all coins.
They focus on one or few coins to trade, i just watched the LISK because they had or still have a large community.
thats ture in my opinion the more of the coins get mined the less worthy they are, just like fiat i think, they print a lot of money so the inflation is really huge