“If tech companies fail to comply with the new law, they could face fines of up to 3 percent of their South Korea revenue.”
Apple and Google can no longer force every in-app purchase in South Korea through their own systems and their 30 percent cut. Both spent years insisting the cut pays for security. Their concessions so far were emails about outside payment and a smaller cut on the first million. Korea skipped the concessions and wrote a law. Other countries now have a template.