Governments (globalist) want ca$hless societies. They can then tighten control over the populations of the world.
Think about it. No private and or under the table dealings. The government will know every transaction, tax every transaction, eventually approve or disapprove of any transaction.
Want to sell grandpas old 12ga shotgun? uh uh uuuuuh. You must have approval. Wanna pay someone ca$h under the table to mow the lawn, clean the pool? Uh uh uuuuh. You'll then be responsible for SS taxes...even the person providing the service will be responsible for income taxes.
It'll be grand for ol Uncle Sugar.
India is experimenting with this right now, and it is causing chaos.