Windows uses a dynamic page file for swapping so it will just keep increasing the page file size until it hits the limits of the OS or config settings. You can

Windows uses a dynamic page file for swapping so it will just keep increasing the page file size until it hits the limits of the OS or config settings. You can do the same thing in OSs like Linux and BSD but most distros still default to fixed swap partitions. For example macOS uses page/swap files instead of a swap partition by default. It's just a design choice. Both have advantages and disadvantages. Linux and BSD distros usually are more aggressive about kicking out applications in favor of keeping the system stable but the trade off with OSs like Windows is misbehaving applications can more easily take down the OS.