I think you answered it. Everyone has their own moral compass and act accordingly.

The concept of “No Ethical Consumption Under Capitalism” and the moral framing of later seasons of The Good Place give good representations of how.

Ultimately each person makes a mark of what they can and cannot care about, and caring about literally everything is a fast-track to total impotence.

Some situations are (relatively) easy:

  * Harry Potter is a relatively isolated (though formative for many)
    franchise.

Some situations are way harder.

  * Nestle creates a HUGE amount of the food we eat.
  * Amazon powers half the internet
  * Microsoft is the backbone of a huge number of corporate sites.
    Excel makes the world go round.

Unfortunately, this is all up to you, and there are individual scales of “harm to the world by participating” vs “harm to you by abstaining” you have to personally weigh. There is no global answer.