When a tenant causes a minpaku house to burn down and it takes 2 other dwellings nearby with it, where does the responsibility lie? And what of the 3rd party houses?
APIs are indeed hard work to implement. The supplier offering an API needs to think deeply about their business and at which points in their existing systems they are willing to inject outside requests for action.
One of Japan's big 3 parcel delivery companies, Yamato, dropped a bombshell when a "inside source" revealed that they would gradually end their same-day deliveries for Amazon Prime customers.
In risk averse Japan, the thrill scale is a bit more docile than some other locations, but the most iconic and visually spectacular events are superb. The olden-day Japanese were particularly good at vivid colors, lighting, and shapes.