- Browsers would come with the no tracking signal enabled by default (why wouldn't they?) so that tracking would become opt-in.
- Nobody chooses to be tracked.
- The whole industry built on tracking users collapses, namely advertisement
- Web sites who based their business model on advertisement go under
Because of this I bet that the industry is lobbying extremely hard for solutions that are maximally useless and inconvenient for the user. Unless the user "chooses" to be tracked of course.
In that vein, another proposal for stemming the flood of cookie consent banners comes from the German government and outlines a multi vendor strategy with very little technical guidance for centralized consent management systems:
https://www.heise.de/en/news/Consent-management-German-gover...