I sent this email to ec-dma@ec.europea.eu
You might have heard or received emails about the how Google Play Integrity is an anti-competitive, monopolistic product that is clearly against the intentions of the Digital Markets Act.
One example for a news article talking about the issue: https://arstechnica.com/gadgets/2024/07/loss-of-popular-2fa-tool-puts-security-minded-grapheneos-in-a-paradox/
In short, Google will only certify "OEM" Android versions, pretending it's for "safety". The reality is a different one: actually safe systems, such as the aforementioned GrapheneOS, are excluded from getting Play Integrity approval, while ancient OEM Android versions as old as Android 5 (hasn't received any security updates in 8 years) are approved. So clearly, this is not about security and it's just a thinly veiled excuse to exclude Android-based open source operating systems from such as GrapheneOS or LineageOS from being viable competitors as suddenly lots of apps refuse to work due to the lack of a Google stamp of approval, and this is not just limited to banking apps.
This keeps alive the duopoly of iOS and Google Android (which is forced to have various Google apps preinstalled in order to pass Play Integrity) and artificially harms open source or de-googled competitors without any technical or security-related arguments to do so. It also means that European operating systems such as /e/ (https://e.foundation/) and iodeOS (https://iode.tech/) are disadvantaged due to Google's anti-competitive behaviour.
So I would please ask you to hear out the arguments the GrapheneOS developers (and I hear also the microG developers) are bringing forth and not to be afraid of taking action against Google.
This was just written in 5 minutes so probably far from perfect but I would encourage others to chime in and let the European Commission know what you think.