Building a browser is hard, and it's even harder when one of the maker of the most popular browser also operates several of the most popular websites. So most other browsers (Edge, Brave, Opera, and many more) are Chromium under the hood. This means that they often implement Google's preferred web functionality as opposed to the actual standard. If Google wants some feature going into the browser, most Chromium derivatives will follow their lead. Even though Brave has rejected many of Google's moves, I'd argue it still isn't enough since they still give Google some control over web standards.

The Internet needs to be impartial and fair in its design, this means it shouldn't be influenced by any one interest in particular. Google's indirect influence over nearly the whole browser market goes against the principle of an open web. The only way to fight effectively this is to use an independent browser, like Firefox.