It's possible to buy fireworks in Wyoming that are illegal in Colorado. So Wyoming merchants have placed a number of huge fireworks shops about two minutes from the border. It's quite convenient for Coloradans planning to ignore local laws.
Trouble emerges once banks start to engage in lending unbacked by real savings, this gives rise to the expansion of credit out of “thin air.” This in turn sets in motion the menace of the boom-bust cycle.
The assertion that “tax-financed public goods can make us all better off” is just that: an assertion. As Rothbard showed, there is no reason to just assume consumers would pay for these amenities were they not forced to through taxation.