Just wondering. You say "of course", but the amount of negativity relating to what we are talking about that Facebook gets compared to other giants like Google or Amazon is incredibly slanted. Mainly in tech or geek centric sites like this or many reddit subreddits. So it's not always an obvious thing for me if someone is cool enough with Google but not Facebook.
I successfully use Bing for 95-99% of my search engine searches. I haven't made the time to get off Gmail. It'll take a while. I don't believe getting off Google is any harder than getting off Facebook for many people. Because if you're not using Google search or Android with Google apps, Google's utility isn't that high for you. Gmail also isn't miles ahead anymore.
Unfortunately I'm so into the Alexa ecosystem I'm nowhere near away from Amazon.