Not a diagram, but here is the summary of obligations:
https://digital-markets-act.ec.europa.eu/about-dma_en#what-d...> Examples of the “do’s”: gatekeepers will for example have to:
> - allow third parties to inter-operate with the gatekeeper’s own services in certain specific situations;
> - allow their business users to access the data that they generate in their use of the gatekeeper’s platform;
> - provide companies advertising on their platform with the tools and information necessary for advertisers and publishers to carry out their own independent verification of their advertisements hosted by the gatekeeper;
> - allow their business users to promote their offer and conclude contracts with their customers outside the gatekeeper’s platform.
>
> Example of the “don'ts”: gatekeepers will for example no longer:
>
> - treat services and products offered by the gatekeeper itself more favourably in ranking than similar services or products offered by third parties on the gatekeeper's platform;
> - prevent consumers from linking up to businesses outside their platforms;
> - prevent users from un-installing any pre-installed software or app if they wish so;
> - track end users outside of the gatekeepers' core platform service for the purpose of targeted advertising, without effective consent having been granted.
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> As an aside, it strikes me as vaguely protectionist to see that it’s only 6 companies and none of them are European… (maybe that’s a hot take?)
Simply put, there are no European companies on this level. If you want a phone, you are going to have to choose Android or iOS. To chat with people on your new phone, you will use what your friends & family are on - most often WhatsApp. When you want to search something on the internet, for most people it's going to be the default search engine, so Google Search. And when you want to go on a Social Network, it's going to be... etc, etc. The EU is of course part of the western world and so has not had the same requirements to develop their own companies, or lock American companies out, like China/Russia.
Perhaps the closest that could come to mind could be some messaging apps, e.g. Threema, or perhaps Mastodon as a social network (sure, it's federated, but anyway...). But these don't qualify as they are nowhere near big enough.
Finally, I'm quite optimistic about the DMA; not just for consumers in the EU but also in the US and worldwide. I feel there has been significant consolidation of market power and stagnation/coming stagnation, and competition is often considered the way to break out of this. Perhaps we will see a new generation of companies and ideas and more options for both consumers and small/medium businesses in the future.