How economies die
Imagine that Cuba and North Korea became, overnight, the two most free-market, limited-government countries in the world. The two countries would have immediately gained civil liberties and economic freedom, but they would still have to accumulate wealth and to develop their economies. The institutional change affects the political situation immediately, but a new economy requires time to take shape. For example, as China opened parts of its economy to international markets, the country started to grow, and we are now seeing the effects of decades of relative economic liberalization. It is true that many areas in China continue to lack significant freedoms, but it would be a much different China today had it refused to change its institutions decades ago.
The same occurs if one of the wealthiest and developed countries in the world were to adopt Cuban or North Korean institutions overnight. The wealth and capital does not vanish in 24 hours. The country would shift from capital accumulation to capital consumption and it might take years or even decades to drain the coffers of previous accumulated wealth. In the meantime, the government has the resources to play the game of Bolivarian (i.e., Venezuelan) populist socialism and enjoy the wealth, highways, electrical infrastructure, and communication networks that were the result of the more free-market institutional realities of the past.
Eventually, though, highways start to deteriorate from the lack of maintenance (or trains crash in the station killing dozens of passengers), the energy sector starts to waver, energy imports become unavoidable, and the communication network becomes obsolete. In other words, economic populism is financed with resources accumulated by non-populist institutions.