Bitcoin cannot be equated to gold because Bitcoin and Bitcoin alternatives can be easily created with blockchain technology. On the other hand, gold is truly finite. There is no other element that holds the same characteristics as gold. One common argument I come across is that while there are many altcoins, there is only one Bitcoin. The problem with that argument is that Bitcoins main differentiation is really its name, all cryptocurrencies are the same in the general sense in that the underlying technology is identical. If I mark a gold bar with an X, it doesnt change the fact that its a gold bar. Similarly, a cryptocurrency by any other name is still cryptocurrency. Remember that blockchain technology allows us to create literally infinite versions of cryptocurrencies, as such, the parallel to gold doesnt hold up.