Why is it that there is no xcode for Windows, while there's Android studio for mac

Xcode is the IDE for swift both of which were made by apple, apple has a standalone OS for pcs (MacOS). Why would they release such a tool for windows if it’s use is almost excluded to iOS. Whereas Android studio is an IDE made by google. Android studio has to be cross-platform due to a lack of android OS for pcs. Even more so less of a reason, different developers. Apple is not interested in the cross-platform jitter while google is. It’s also considerably easier to just make something for a single platform as different ones (from a developer viewpoint). Either way I hope this helps.