<textarea> <input> <video> ARE all Web Components, and have been for many moons so Browser vendors could implement their own UI. So everyone using a Browser *I

<textarea> <input> <video> ARE all Web Components, and have been for many moons so Browser vendors could implement their own UI. So everyone using a Browser *IS* using Web Components. It just took some years for the technology to be opened up with the Custom Elements API to us mortals here in Userland.