Apple says that it has received numerous emails from European users and government agencies that are concerned with the risks of alternative app marketplaces, and Apple promises to "work tirelessly" to protect users "to the extent possible under the law." There is no way for users to opt out of the DMA changes, and Apple suggests that some people may have to use alternative apps against their will. Employers and schools may require an app that is only available through a marketplace, for example.