You will end up in the Tragedy of the Commons situation. Everyone wants good schools; no one wants to pay for it. Everyone wants good roads; no one wants to fund it. Everyone wants to stop climate change; no one wants to change.
The reason we can't do that anymore is that it requires something like an equitable distribution of political power. Our current system is so top-heavy in terms of who determines policy and political direction, that even simple problems with easily-mitigated failure modes are beyond us.