Above a certain level of income, the relative value of material consumption vis-a-vis leisure time is diminished, so earning a higher income at the cost of working longer hours may reduce the quality of your life. More importantly, the fact that the citizens of a country work longer than others in comparable countries does not necessarily mean that they like working longer hours. They may be compelled to work long hours, even if they actually want to take longer holidays.

Between the Great Depression and the 1970s, private business was viewed with suspicion even in most capitalist economies. Businesses were, so the story goes, seen as anti-social agents whose profit-seeking needed to be restrained for other, supposedly loftier, goals, such as justice, social harmony, protection of the weak and even national glory.

It takes time and experience to absorb new technologies, so technologically backward producers need a period of protection from international competition during this period of learning. Such protection is costly, because the country is giving up the chance to import better and cheaper products. However, it is a price that has to be paid if it wants to develop advanced industries.

The higher education system in these countries (US, Korea etc) has become like a theatre in which some people decided to stand to get a better view, promoting the others behind them to stand. Once enough people stand, everyone has to stand, which means no one is getting a better view, while everyone has become more uncomfortable.

People 'over-produce' pollution because they are not paying for the costs of dealing with it.

We are not smart enough to leave things to the market.

Self-interest, to be sure, is one of the most important, but we have many other motives - honesty, self-respect, altruism, love, sympathy, faith, sense of duty, solidarity, loyalty, public-spiritedness, patriotism, and so on - that are sometimes even more important than self-seeking as the driver of our behaviors.