Bitcoin and ethereum are hardly worth comparing with digital gold. Gold symbolizes high price stability. Any decentralized cryptocurrency, on the contrary, is characterized by huge price volatility. Moreover, the price volatility of the cryptocurrency is so large that it is very problematic to use it as a means of payment.
We are now awaiting the results of introducing improvements to ethereum called Istanbul, as well as the beginning of next year, Ethereum 2.0. Of course, they will not solve the problem of price volatility, but the overriding problem of scaling should.