This is a good point and it is something we can all do. Don't go work for companies in industries you're opposed to, no matter how much money they want to throw at you. For this discussion, that would be adtech, marketing/pr, etc.

Most of the time people think about how to stop corporate behavior they don't like, and it comes down to shutting off their cash flow by not buying their stuff, or by regulation. But workers are also required, and just based on numbers I'd say withholding talent is a lot more impactful than withholding cash.