Let me tell you about a fascinating anecdote that happened to me a few years ago. My grandfather bought a new laptop. I set it up with firefox and saved his common sites (gmail, facebook, etc) to the new tab page so that he dosen't have to do anything else to open them.
A month later I get a call from him asking about why he is unable to find gmail and facebook. What happened is that my grandpa ended up with google chrome on his machine, which obviously did not have the pinned sites on the front page.
Here's the real kicker - He does not know the difference between about "firefox" and "chrome" and browsers, nor he did not install any other app that bundled google chrome with it. He did not go around adventuring with his browsers.
He was literally baited by google into installing chrome in a completely sneaky and underhanded way. How? Through the front page ads.