No good solution existing doesn't mean we should implement useless measures that restrict freedom. Assuming a similar percentage of car washes and hairdressers launder money( similar to how many >10k cash transactions are for money laundering) we could ban hairdressers and car washes from using cash all together. To fight corruption...

I think the problem we should fight, if any, is not the laundering. I simply can't imagine a good return on the investment in terms of fought-corruption vs permanently removed rights.

I also don't get the argument of "very few people it" against cash. Sure, the usage is low, but why would we then take away the right? To me this is like taking away the right to protest because 99% of people are almost never on the streets(made up statistic). Restrict people's bank accounts and see how quickly they will start using cash instead; I've seen this happen. Similarly, restrict people's rights and they will head for the streets.

> Assuming a similar percentage of car washes and hairdressers launder money( similar to how many >10k cash transactions are for money laundering) we could ban hairdressers and car washes from using cash all together.

And how many >10k cash transactions are for money laundering exactly?