Opt in organization. It would be a system where markets were the primary governing force and economic cooperation maximized.
Insurance companies to cover myriad risks, private police / military to enforce property rights in instances where needed, private infrastructure, private education. There are examples of these things working.
Imagine an economy that was substantially more robust bc there was no government interference. No taxes, no red tape, no regulation creating massive imbalances and destroying incentives.
Then imagine keeping 100% of your increased earnings and putting that toward the things you need / want. It would be a major economic feedback loop and it would much more efficient for the individual.
Currently in the west, if you include inflation, people are losing >50% of their earnings to Government. Those taxes are completely misused by Government and are essentially a total loss - meaning we get very little if anything personally from our tax “contributions”.
Imagine a world where we all had at least 2x more capital and we could choose where / how to best spend it. You can allocate your capital better than anyone else can, especially governments. They waste the money they take from everyone bc its just flows in automatically and there is no recourse for their misallocations.