It's because it happened to be an easy to remember brand that is now associated with the product. Other examples are calling a tissue a Kleenex, calling a vacu

It's because it happened to be an easy to remember brand that is now associated with the product. Other examples are calling a tissue a Kleenex, calling a vacuum a Hoover, calling a cola a Coke, and so on. Many mainstream people call a video conference a Zoom and it happened to stick.