Without crypto, tax evasion, money laundering and etc will still go on. It is not about the coins or channels, it is the people.

Bitcoin is controlled by all its users almost all over the world almost because its decentralized system means that no one has to stay compatible with each other those who use bitcoin who can control this all.

Gold is the precious metal found in earth and the value of money is measure through to it, while BTC is a virtual currency you cannot touch it but it has a value and comparable to the value of gold. It’s up to the users in which he prepare, gold is a fix assets while BTC is a volatile assets. But very versatile you can carry it anywhere.