1. You cannot expect a public body to take a legal conclusion with significant financial impact on the basis of a single citizen report or in reply to that report. This takes analysis, technical and legal work, etc. So your expectation that they respond to your message eith something akin to "of course, you provide evidence of a breach. I, the single case officer responding, confirm the facts are true. Thanks for telling us we will now fine them 5 billion" is a bit unreasonable.
2. I don't see how even inadequate application and a non-committal response leads to the conclusion that this is intended to (or even just allows) to entrench the Android/IOS duopoly.