Some of you might remember when a 3mb flash animation could pack in some 5 minutes of animation, with the more advanced ones even having chapter/scene selectors, which could also include clickable easter eggs and other kinds of interactions during the scenes.
There is, SVG with
<animate>. It’s just not that common.There’s a lot more tooling for creating rasterized videos than SVG. Flash had a whole development environment around it. SVG is comparatively rubbing sticks together to make fire.