Earlier quoted context omitted.
Yes, maybe it will become digital gold. If it were true digital gold, it would have a similar valuation closer to gold, i.e. $8tn (a 60 fold increase of its current value).
A whole lot of the world's gold is held by governments. For BTC to reach similar valuations, it would need governments to buy it. Why would they?
I don't know whether governments will buy Bitcoin, but I wouldn't consider it unlikely that some country decides to use crypto as a replacement to their fiat currency -- either the government of a developed nation does it, or the people just decide that their local money isn't worth the paper it's printed on, and decide to use some sort of cryptocurrency.
I know this sounds crazy, and I would've called it a ridiculous notion if someone told me this 5 years ago, but I don't consider it too unlikely anymore. It has grown on me.
Due to quantitative easing, money just isn't worth much anymore and asset prices have gone up a lot across the board. Just look at the recent acquisition of a painting by Leonardo da Vinci: $450m. That could not have happened 20 years ago.