Most cryptocurrencies (including Bitcoin and Ethereum) do not solve this issue, governments could order businesses (or payment systems used by businesses) not to accept payment coming from some blacklisted addresses, even indirectly; and this is possible thanks to the public ledger.

And they could outlaw any cryptocurrency that does provide anonymity for senders (Monero, GNU Taler, ...). While easy to bypass for individuals, legitimate businesses would not. Governments might even ban cash one day.

This is a social and political problem, technology won't solve it.