TOKYO — Toshiya Fujita just wants somebody to make a decision already.

Mr. Fujita, the managing director of a leather goods wholesaler in Tokyo, is trying to figure out how many Olympics key chains to order. Like hundreds of business managers in Japan, he is caught in a will-they-or-won’t-they guessing game about whether the Tokyo Olympics will be staged this summer even as the coronavirus continues its deadly march around the globe.

An increasing number of athletes, experts and ordinary people in Japan are convinced that the Games cannot be held. But the Japanese organizers and the International Olympic Committee have steadfastly maintained that the show will go on, with the committee saying on Tuesday that “there is no need for any drastic decisions at this stage.”

The uncertainty has left a whole ecosystem surrounding the Games stuck in a holding pattern. Businesses as large as Coca-Cola, Toyota, Samsung and Google, which are sponsoring the event, and as small as hotels, Airbnb operators, security companies and travel agents are simultaneously preparing for the Games while bracing for their possible cancellation.

Mr. Fujita’s company, Moriya, is among them. “If the Games are canceled, we will end up having leftover products,” he said. “So we would appreciate it if we get some direction in March about whether the Games will be held or not.”