I'm not worried about ZCash being duplicated.
You can't copy the anonymity set.
Even if somehow you magically did, you can't copy a fair blockchain launch, and 10 years of supply distribution.
What makes Zcash such a good asset to hold isn't just the emission curve(which can be copied), but where along the current emission curve we are. If you try to speedrun that via fast mining or skip it all together via pre-mining, it all falls apart, and you end up with what what a lot of coins have now, where large whales hold the most of the supply and any price-discovery is sold off instantly.
A lot of Zcash OGs suffered for a long time to get to the point we are not now.
You can't duplicate that easily.
The developer mind-share too, that can't be copied or easily stolen.
Zigher.