Business idea (needs work)... Converting crypto profits to fiat

Would love to hear other people's thoughts on this... A service that converts cryptocurrency to fiat money without electronic trace. Most countries will treat profits made from crypto as a capital gain and tax the individual accordingly. There needs to be a way to get access to your profits without paying tax?

As the interest in crypto grows, the market cap will. Continue to expand and profits will surely come flowing in for early adopters. Simply selling your crypto on an exchange usually requires you to register your personal information and also the money into your bank account is traceable due to the electronic transfer.

I've seen a couple of services out there which come close to this service, but they aren't that safe, guaranteed or exactly what people are after.

One of these is a service where you pay someone to send you a western union transfer.... Pretty sweet idea, but relies on trusting an individual. No thanks. Also huge fees.

Another service is an exchange where people meet in real life to swap money for crypto. Extremely unsafe and not lunch liquidity in the market pending on your location...

Perhaps the best is an Australian service called living room Of Satoshi . This service allows you to pay any bill that accepts BPAY with crypto. In Australia BPAY is used for everything including credit card bills, energy bills and even private school education fees. Whilst it's a close service, it doesn't provide cash to the user to be used as they see fit.

Again, this is an idea and need that I've been stewing on for some time, but still haven't been able to get to the core of the problem.