Unity executives see a bright future for WebGPU in game development

They are emphasising tiny "instant games" because that is the only form in which games in a browser are viable. The filesystem and threading APIs (among others) to support full size experiences are handicapped or non-existent.

There is also nothing hugely new here, WebGL 1.0 was perfectly fine for this kind of thing, despite being a bit limited and crap to work with

WebGL2 is faster to use today for GPU performance. WebGPU, however, is in many ways simpler and more flexable. I hope we eventually see good performance benchmarks for WebGPU on GPUs across different devices / architectures.

Any time Unity Executives say anything you can be sure it is a ploy to steer users towards their product. In this case, Unity is stronger than Unreal with browser deployment.

That’s all it means though. You can wish a wish, but then you have to make it come true.