For what? Why should bitcoin replace gold? This is a completely false paradigm that is imposed by those who see bitcoin solely as a speculative asset, while bitcoin is much more. Also, gold is not just a means of accumulation or speculative asset, but also an important resource in industry. These are partially overlapping in use things, but not identical, and bitcoin does not need to replace gold, it needs to further develop in its own direction, using all its advantages, and let gold remain gold.