Having huge amount of money that you can invest is really good, because once it grow the big income you will get too.
Betweengold and bitcoin if Im choosing only 1 maybe I choose bitcoin because I invest to this and I know what ways of earning and it is possible for me to earn big profit. But if we rate the risk of losing money bitcoin is more risky than the gold.
it all depends on the size of your investment capital
if it is large enough, then you can invest in several assets
even necessary in order to reduce risks
of course, I will always choose bitcoin for investing
however, I will throw some of my investments into other coins
as well as markets