I don't understand, Firefox has this functionality. For example I have it set up so if I type 'y cats' it will search Youtube directly for cats. You can do the same with ebay. Similarly if I type 'yout<tab>cats' it will do the same search. Also, if you like it so much, you can configure Firefox to not put things like bookmarks and history before search results in tab-complete search suggestions. Firefox's address bar is strictly superior as far as I can see. The only thing it's missing vs Chrome is dark patterns.
Firefox search bar is so much superior to other browsers, I don't understand why almost no one points this out. Chrome is so frustrating when it keeps prioritizing search suggestions over history.
