As a follow up here check the solvency of the FDIC... .250k per account and the highest number of accounts it insured that it can cover was 1.5% according to what I can find
The other 98.5% are out of luck... great guarantee
It would be easier just to collect bitcoin through a goods and services or value added tax at the counter. It's what is going to be required anyway. It will be the only way to effectively collect taxes when you remove banks.
Not to mention, 0. Ask businesses (who don't have an incentive to lie on your behalf) how many Bitcoins they gave you. If you tell them fewer Bitcoins than the businesses reported giving you, you go to jail.
I mean, that's basically how the IRS works now for cash dollars.
1. Ask if you have bitcoin and how much. If you lie you go to jail for perjury.
2. Ask you for N bitcoin. If you resist you go to jail.
The entire technical advantage relies on you effectively lying to your government. Not a good plan.