Facebook is well prepared to weather the ad boycott
https://tech.newstatesman.com/business/facebook-ad-boycott
Advertisers wield a significant amount of power when it comes to media platforms such as TV and the internet. However, Facebook may be immune thanks to its unprecedented scale, ease of use, and quite precise targeted advertising capabilities. There simply isn’t an alternative, which is why major advertisers may not be able to stay away, despite their concerns over Facebook’s approach to regulating hate speech on the platform.
Approximately 1,000 brands have joined the Stop Hate For Profit campaign, a movement that is urging advertisers to boycott Facebook in the month of July to pressure the social media giant to step up efforts to remove perceived hate speech posted on its platform.