Well, the Alibaba part is worth $30b+. Yahoo Japan another $10b. So the world's third (or 4th or 5th) largest internet property would only need to be worth $5b to "break-even". Thanks for the reminder!
Not that it's ginormous, but for example, eBay never really happened in Japan because Yahoo Auctions was already a thing.
Yahoo Japan also runs an ISP
But Taiwan only has ~23m people vs Japan's ~130m...