Related:

1. The list of designated gatekeepers has not been released yet, while it will almost certainly include WhatsApp/Facebook (98%), I doubt it will include Signal (15%).

2. The DMA does not require that apps actively facilitate exchanging messages between services, only that they make endpoints available for other services to interact with. Even if both WhatsApp/Facebook and Signal were required to provide these, one of them would need to voluntarily take the initiative to "translate" between the two (Probably WA, 30%).

3. There is a six-month transition period after the act enters into force (October 2022) before it becomes applicable (April 2023). Even then it's not enforceable, since the designated gatekeepers won't be picked until late 2023 and those named won't have to actually comply until after another six-month transition period. So all of the above has to happen a year before any possible threat of punishment (1%)

4. When I plug those numbers in my calculator it makes a frowny face.

https://competition-policy.ec.europa.eu/sectors/ict/dma_en

https://www.consilium.europa.eu/en/press/press-releases/2022/07/18/dma-council-gives-final-approval-to-new-rules-for-fair-competition-online/

https://element.io/blog/a-guide-to-navigating-the-digital-markets-act/

https://www.sidley.com/en/insights/newsupdates/2022/05/the-digital-market-act-is-almost-here-ten-things-to-know-about-eu-new-rules-for-big-tech

Looks like I was off by about a year:

https://www.sidley.com/en/insights/newsupdates/2022/05/the-digital-market-act-is-almost-here-ten-things-to-know-about-eu-new-rules-for-big-tech

@LudwigBald Ha, you posted this while I was looking at the exact same thing!

(I am an EU citizen living in the EU, if that's important)