Comment by srmarm

Technically it would be simple, they'd just need to add a lookup to their database before doing regular DNS lookup.

Back in the 90s AOL did similar with their browser and it was fairly common to see companies list their AOL Keyword in advertising.

I think it's unlikely to happen too soon though as they generally own the search box in chrome and can autosuggest whatever they want when you enter a term anyway which is probably the contemporary equivalent anyway.