This seems a bit silly - it's not like Google's search results are that much better than Bing or DuckDuckGo (or better at all most of the time). Google has Google Colab, Chrome, and Android, and the whole Docs ecosystem, and they've integrated those things together pretty well while still being loosely coupled enough to switch out any part of the ecosystem with a competitor's product.

Is there a reason to break up Google other than that they are doing well? Other search engines seem to have no problem establishing their own niche and doing well.