It isn't exactly like you googled. In the little video he didn't mention what happens if exporters lose market share. They will reduce their price to retain market share, simple as that, Google Boy.
Who pays the tariff is completely dependant on the commodity.
Who Bears the Cost of Tariffs?
Tariff incidence is the technical term for how the costs of a tariff are split between foreign exporters and domestic importers. While importers pay the duty, the “economic burden” of the tariff can be shifted onto exporters if they lower their export prices. We illustrate this effect through a simple example: Suppose foreign exporters charge $100 for a good, and the importing country decides to levy a 25 percent tariff on it. If the foreign price remains unchanged at $100, the duty paid is $25, increasing the import price to $125. In this case, the tariff incidence falls entirely on the importer; in other words, there is 100 percent pass-through from tariffs to import prices, and therefore on U.S. consumers and firms.
In contrast, the exporter might lower its price in order to avoid losing market share. If foreign exporters respond to the tariff by lowering their price to $80 (i.e., $100 divided by 1.25), the price paid by importers will remain $100 (with $20 in duties paid to the government). In this case, 100 percent of the tariff incidence falls on foreign exporters, who now receive $20 less for the same good; in other words, there is zero pass-through from the tariff since the import price is unchanged.
