However, in the event of trade diversion, a member makes sales at the expense of a more competitive producer in a country that is not a member of the bloc, simply because its products enter the market of its partner duty-free, while the non-member producer, more competitive, is subject to a discriminatory obligation.  Third-country exporters with a comparative advantage under equal competitive conditions are losing their commercial character. Fourth, Western economic theory assumes that trade will be reasonably balanced over time. If this is not the case, it indicates that the deficit country will introduce products for which it would normally have a comparative advantage; If these products operate in sectors where production costs are falling, the sector could lose its competitiveness in global markets over time. Creating the backbone of property rights and market policies is essential to creating a kind of market stability that is important to foreign investors. In countries where the rule of law is not in place and goes from one executive to another, foreign investors are more confident and willing to take risks to attract companies to developing countries. This is one of the reasons why Taiwan and Hong Kong, for example, have thrived in recent decades.  This is the result of multilateral trade negotiations for certain products. For example, a country reduces tariffs on products that are not sensitive to imports – often because they are not manufactured in that country – more than tariffs on import-sensitive products. In a free trade agreement whose end result is a zero tariff, it would have no effect if the agreement were fully implemented.
However, during the transitional period, this could be very relevant for some products. However, beyond this exception, the removal of tariffs or other trade barriers increases trade in the product, and that is the intent of the trade agreement. The classical Western business model was based on the economic realities of the 18th century. The factors of production were relatively fixed: the land was immobile (although its fertility or use may change) and labour mobility was severely constrained by political constraints.