The European Union’s new Digital Markets Act (DMA) is a complex, many-legged beast, but at root, it is a regulation that aims to make it easier for the public to control the technology they use and rely on. One DMA rule forces the powerful “gatekeeper” tech companies to allow third-party app stores. That means that you, the owner of a device, can decide who you trust to provide you with software for it. Another rule requires those tech gatekeepers to offer interoperable gateways that other platf...