How are they captured? By being required to pay tax in the fiat currency, which if not paid then violence is applied.
"fiat currency is not backed by violence as many people think, it's actually backed by a captured economy" -- nostr:npub1mygerccwqpzyh9pvp6pv44rskv40zutkfs38t0hqhkvnwlhagp6s3psn5p
How are they captured? By being required to pay tax in the fiat currency, which if not paid then violence is applied.
That's like 2% of how they are captured