$30B MC? Why not? What would it take? 100Moz on the ground? We've already just short of 10Moz at Tres Estados IMO from some shallow holes drilled by the side of the road. As I said above, the deeper holes at Ema will yield more tonnes and with the upgrade from the new assays we should smash 10Moz at Ema IMO.
Billions of tonnes of dolerite and porphyry, overlain by soil anomalies >5km long, not one barren result to date and ounce-plus grades tells me it'll be a walk in the park. You're the one struggling with reality: everything tested to date across kilometres of ground is mineralised.
Going by this old article, gold reserves equate to ~$200MC per ounce so using that metric we'd need 150Moz but those companies are saddled with massive debts so maybe 50Moz will do it. Of course these are very rubbery figures.
https://seekingalpha.com/article/787361-most-gold-for-the-buck-gold-reserves-of-major-gold-miners