Being a monopoly is not necessarily a bad thing. It can lead to consumers being negatively affected but that is not a foregone conclusion. YKK, the zip manufacturer, has effectively had a monopoly on zips for a long time but they produce high quality goods at a low price. The consumer gets a great deal and the monopoly knows to keep the customer happy to keep their market position.
Google do search better than anyone else. Before Google I would use 2 or 3 search engines but once Google proved their Quality I had no reason to go elsewhere.