Here is a response from a Microsoft employee:<p>&gt; […] Edge itself integrates with Cortana and offers various options that other browsers may or may not. Those integrations and options are likely to grow over time. Basically you can think of the search as a single end-to-end transaction in terms of the feature design, meaning that handoff to an undetermined browser or search engine doesn&#x27;t produce the desired experience for the feature.<p><a href="http:&#x2F;&#x2F;arstechnica.com&#x2F;information-technology&#x2F;2016&#x2F;04&#x2F;cortana-web-searches-in-windows-10-will-now-only-be-able-to-open-edge-and-bing&#x2F;?comments=1&amp;post=31094779" rel="nofollow">http:&#x2F;&#x2F;arstechnica.com&#x2F;information-technology&#x2F;2016&#x2F;04&#x2F;cortan...</a>