I imagine if you wanted to 100% stop buying or using products from FANNG (+Microsoft & Twitter) it would be impossible without doing anything short of living completely off the grid.

Imagine, you ditch your smartphone. You switch to Linux. You stop using _search engines_ because all of them use Google or Bing in the backend. You abandon Facebook, Twitter, LinkedIn, YouTube, GitHub, and Gmail. Before you go to a website, how do you know if they are going to load an asset from AWS or GApps? Maybe the server loads an asset from AWS and redistributes it to you, so you can’t just blacklist IPs. How do you know if your Bank’s ATMs are using AWS? Or your hospital’s digital records? Eventually someone you do business with will do business with FANG and you’ll be indirectly supporting them.

I have been actively trying to distance myself from unnecessary technology, and especially that which is owned and controlled by Big Tech. I now use a "dumbphone". I have begun slowly migrating to ProtonMail. I have already been using Linux as a main OS on desktop. I do still use a Macbook Pro only because the 2015 version I have just won't die (touch wood), but my next laptop purchase would be with the aim of installing Linux (high-end Thinkpad perhaps). I don't use any form of social media, but instead arrange social events through phone calls, texts, and email. None of this has made my life more difficult. On the contrary, I talk to people more often, commit to more social engagements, and feel more in control of my digital life. I highly recommend everybody to at least try some of these things!