Monero is way more used then you think (along with ZEC) in the darkweb so don't understimate it! Btw Dusk isn't a currency, it will be an ecosystem of security anonymous tokens
Well I thought DUSK will be the in-platform cryptocurrency much like Ether to Ethereum network right?
I don't know, for example Swarm is an ecosystem for security tokens too, SWM will be used like gas and for voting purpose (great governance). I don't know ho DUSK's native token will be used