First - if Microsoft managed to somehow make a more powerful search with PowerSet then they are still lacking in reputation. Rep alone will get a large portion of Google users to stay with them.
Second - People in general don't like Microsoft. Sure they have some great products (don't knock Windows and Office, the world does run on them even though there are other great platforms/editors) but they have lost face due to poor support options and annoying aspects of the interface
First - if Microsoft managed to somehow make a more powerful search with PowerSet then they are still lacking in reputation. Rep alone will get a large portion of Google users to stay with them.
Second - People in general don't like Microsoft. Sure they have some great products (don't knock Windows and Office, the world does run on them even though there are other great platforms/editors) but they have lost face due to poor support options and annoying aspects of the interface
Third - Google is not just a search engine.
That's just some of the reasons.