I expect over the next couple of decades companies will start mining asteroids for precious metals, so the once finite nature of gold will change - maybe not infinite, but a vastly increased potential supply.
It will be interesting to see how this then compares with bitcoin's fixed max supply.
Anything can become a store of value, so long as enough people agree it has value, so that this opinion becomes the established consensus.
I would contend that something with a guaranteed fixed supply is much more suitable than gold to fulfill this role.