When a multinational corporation (MNC) considers a major investment abroad, it holds a powerful position. The host country wants the jobs, technology, and capital the company can bring. It will often roll out the red carpet, offering tax breaks, favourable regulations, and other perks to win the deal. The MNC, meanwhile, can play several countries against each other, securing the best possible terms before committing a single dollar. At this pre-investment stage, the MNC has all the leverage.

But what happens after the factory is built, the mine is dug, and billions of dollars are sunk into the ground? The power dynamic flips. This shift is the core of the Obsolescing Bargain Model, developed by economist Raymond Vernon in the 1970s. He noticed that the initial agreement, or 'bargain,' becomes less relevant—it 'obsolesces'—once the company's investment is irreversible.

Once capital is committed, it becomes a hostage. The MNC can't just pack up its factory and move it to another country. The host government knows this. This creates what economists call a time-inconsistency problem. A government's promise of low taxes might be perfectly credible before the investment is made. But after the investment is sunk, the government has a strong incentive to break that promise and demand a bigger piece of the pie. The initial bargain is no longer self-enforcing.

In the 1970s, a government's change of heart often took the form of outright expropriation—the seizure of a company's assets, sometimes called nationalization. A new political regime might simply declare the foreign-owned mine to be state property.

Today, this is rare. Instead, host governments are more likely to engage in creeping expropriation This is a more subtle, gradual erosion of the MNC's investment value. It can include a host of new measures: sudden environmental regulations that require costly upgrades, mandates to hire specific local suppliers, price controls, or unexpected 'windfall' taxes that skim off profits. Each individual action might seem justifiable, but their cumulative effect is to rewrite the original deal entirely in the host government's favour.

The risk an MNC faces depends heavily on the nature of its investment, a concept known as asset specificity An oil well, a copper mine, or a railroad line are highly specific assets. Their value is tied directly to their physical location and they cannot be repurposed or moved. These are the easiest targets for a host government squeeze because the 'hostage' is completely immobile.

A semiconductor fabrication plant or a car factory has a lower degree of asset specificity. While the building itself is a sunk cost, much of the value lies in the technology, the skilled workforce, and the integration with a global supply chain. A host government could seize the factory, but it couldn't easily replicate the complex processes or the brand value. The MNC retains more bargaining power because its most valuable assets are intangible and harder to capture.

This dynamic explains why so much of international economic law is designed to solve this very problem. MNCs need credible commitments that their investments will be safe over the long term. Host countries need to be able to make those commitments believable. Without mechanisms to enforce the original bargain, long-term foreign investment in high-risk sectors would be far too dangerous. This is where political and legal institutions become essential tools for managing risk.