I really dont think Bitcoin will help the sales of gold. In fact, I see bitcoin taking money from gold.
Most portfolio managers are going to suggest 5% of the money in risk assets...maybe 10%....I dont see too many splitting it up.
Gold is an under performing asset. Also, it has little utility. People talk about spending with gold...good luck with that...how many cars are bought with gold? Houses? Boats? We are already seeing that with bitoin.
We are really moving into a digital world....hence the digital assets are going to rule.