For 2D games where you can batch heavily (Textures in atlas, single material) WebGL is fine. And for games like that it indeed does not make sense to go native

For 2D games where you can batch heavily (Textures in atlas, single material) WebGL is fine. And for games like that it indeed does not make sense to go native if it works fine on all target platforms. Except if you care about power consumption. For modern 3D game, even in mobile, you do need way more than that and 100 draw calls is very limiting.