As the web contracts, becomes more silo'd and locked behind paywalls and app gardens, the volume of searchable data is also retracting. Add in that most of Google's users never go past the first page, or the 6th result, and I think Google's search is vulnerable.

Now, add in all the great features and functions they have built over the last 10+ years (maps, travel, etc) and they will probably always maintain an advantage. They are after all a verb...

But the actual search results, IMHO are most definitely within reach for a competitor or 3 to tackle.