If other search engines had the same data available as Google, they could offer similar search results without ads. This includes the auto complete feature, and

If other search engines had the same data available as Google, they could offer similar search results without ads. This includes the auto complete feature, and much more. No other company is in a position to ever catch up in terms of data collection and utilization. Google has become so important for advertisers that in many cases there is no similar alternative. The percentage of users searching Google is such a high percentage, as well as the primary way people search for product X or Service Y that failing to pay Google can make or break their success.