Sure, but there are also laws and regulations that limit what you can do with stocks on a real exchange: https://en.wikipedia.org/wiki/Microcap_stock_fraud
> won't this problem go away as BTC gets more popular?
Maybe. It would have to get a lot more popular, and a lot more legitimate and regulated. At that point, it's lost all the cyberpunk appeal, and it's just another speculative asset.