That's also untrue. I remember being viscerally mad at Yahoo for moving away from Inktomi because Inktomi results were much better for what I searched for...or I had gotten my searches to work for Inktomi. Who cares? Eventually, Google got better, and I started using them.
I use a lot of Google services, but when I search the web I use Google because it works. Searches have very little traction. The only thing it takes to move my searches elsewhere is consistently better results. All it takes for me to try a new search engine is Google not working well a few more times a month.