I don't really understand the position you are presenting, but the idea of being reimbursed for money invested in an unsecured asset - forget about the wild volatility of crypto - seems very naive. A few things:

* a country may step in to prop up failing markets or even companies, but they do this outside of a bankruptcy process, and rarely (never?) directly.

* an owner of an unsecured asset like crypto would one of the last in line when processing the bankruptcy (funny enough, the tax obligation of the company would be right near the top)

* you don't pay tax on your trades, but based on the outcome at the time of the trade.

* most countries tax individuals based on residency, and I think there's a good argument that you do get benefits both the physical and societal. You can decide if it's "worth it" but I'm not sure how it's "accidental". It's definitely true that the linkage between paying capital gains taxes and driving down a newly paved road is long and complex.