Megacorporation

A megacorporation is a massive conglomerate holding monopolistic or near-monopolistic control over multiple markets. Due to the multiple planet nature of Yamatai, megacorporations still face competition with each other over different planets. While the fictional concept of megacorporations often include them owning large corporate armies or usurping governments, the megacorporations in Yamatai are indeed heavily limited by laws.

The megacorporations in Yamatai are generally of three major types, being zaibatsu, keiretsu or state-owned enterprises. The zaibatsu are large vertical monopolies consisting of a holding company on top, with a wholly owned banking subsidiary providing finance, and several industrial subsidiaries dominating specific sectors of a market, either solely or through a number of subsubsidiary companies. On the other hand, keiretsu are more informal and consist of member companies owning small portions of the shares in each other's companies, centered on a core bank. This system helps insulate each company from stock market fluctuations and takeover attempts, thus enabling long-term planning in innovative projects.