Things like using car washes to launder money are pretty much a dead thing because it's one of the worst ways to do it.
I have a friend who owns a laundry business and he was approached by somebody who pretty obviously wanted to buy it to … launder money.
ban hairdressers and car washes?
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.
And how many >10k cash transactions are for money laundering exactly?