The DOM(and CSS) is primarily built for documents and forms, even with the latest addition like Flexbox or Grid layouts. It is closer to typesetting tools like troff, latex, texinfo than any UI engines you can think of. And some that are not needed, like the difference between <i>, <a>, <span>, <strong>,...

Also with most GUI frameworks, there's some difference between widgets like label, button, menu, checkbox,... and containers that does layout management. And there are not a lot of elements in both sets. This is the reason why React Native has a very sparse components library. With simpler implementation, you have a simpler rendering path, and the developer have less elements to deal with.

Also some have ready-made implementation of really useful widgets, like tree, grids, tables, lists, and other dynamic things. You can find libraries for those on the web, but the web implementation of scrollable container is janky.