Everything mentioned above clearly takes to result as Zcash is not suitable for investment. There are many reasons for that few are as follows :
Higher price entry in market
Major premined coins
As Zcash introduced to exchanger it has very high price against Bitcoin but in few days it goes down tremendously. It means who have already bought or mined Zcash have dump there coins to market which results to decreased price of Zcash.
Agree. If ZCash didn't have the founder's reward, then I think that the price would've gone higher and would remain in its original levels. Those who invested early into ZCash had huge losses in profit due to the massive price increase. That is why I always wait for a few months after a new coin is released, as the first days of launch, the coin would be full of hype making it reach high price levels that are just speculation.
Now, I think that the prices being reflected on the markets for ZEC has stabilized and may be a good time to invest some BTC into it. It has managed to stay around the $45 - $50 mark, making the perfect opportunity to invest in it.
Nevertheless, the day when ZCash becomes accepted at major merchants worldwide, and its anonymous technology becomes usable around the darknet markets, would be the day when ZCash would really spike in price. Just my thoughts.