Gold is scarce but it has no limited supply. Bitcoin has limited supply.
Gold is not easy to save. Bitcoin is easy to save if you read and understand about it.
These are the two areas that bitcoin is better than gold but gold has good side also as it can be used as jewelry and others. But what makes gold expensive today is what people think about it. Also exactly what makes bitcoin expensive today. That it is an investment. That it is scarce.
Gold on Earth is limited but with advance of technologies, human will be able to mine more gold on Earth, it's a first uncertainty about gold total supply. Another thing is gold exists in the space, on asteroids and other planets that can be reachabled and mineable in the future.
These things are uncontrolled by human and gold investors while with Bitcoin, the total supply is 21M, not more. Technically, Bitcoin total supply can be increased by protocol upgrade but the fact is no Bitcoiners want it to happen and it is an impossible change in reality.
Between Bitcoin and Gold, Bitcoin has as less inflationary rate and demand rises very exponentially. Price of Bitcoin definitely will be beneficial by imbalance between supply and demand towards demand side.