I read those links and as i said 8% to third party dev, 7% to ECC and 5% to zcash foundation from that 20% for next 4 years.
first 10% plus second 20% will be around 2 millions coins.
It is a lot of money and many of good project did not have this kind of money and yet they succeeded.
So as a ZEC holder i expect massive growth for Zcash in next 4 years.
It’s worth noting here that these funds would have otherwise gone to the miners. This reflects a conscious decision to pay slightly less for security, and to give that money to the developers/organizations that are working on the network.