@hkarthik implied that it's impossible to use technology and also boycott Apple and/or Google. I agree with them.

You seemed to disagree by saying that you do boycott Apple and Google.

The point I was trying to make is that you're part of their revenue stream even if you yourself don't have any consumer relationship with them. That's why they feel like a monopoly to so many of us and why we criticize them rather than leaving their ecosystem. We can't leave their ecosystem!

One thing I try to do is to minimize how much revenue they get out of me. For example, I use uBlock Origin and uMatrix to block their ads and scripts, their cookies, Google Analytics, etcetera. I hope they are losing money on me, that'd make my day!