Congratulations EU on your new freedom to choose which apps you want to install and buy them through Apple's App Store or direct from the app developer or in bundle offers developer might participate in at significant discounts.
Like you too, we Americans enjoy- and have always enjoyed- the very same flexibility for our Macs, which has NOT resulted in our destruction, evil crime syndicates bringing us to our knees, bank accounts emptied, first born taken into slavery, locusts-frogs-famine or 4 horsemen galloping our way. I expect this to play out exactly the same for EU iDevice owners.
I envy your access to a broader selection of iDevice apps and likely better pricing options through the powerful force of actual competition... the one crucial variable required to act as check & balance in the bargain struck between buyers & sellers. Where these is zero competition, seller gets very, very rich. Where there is tangible competition, buyers tend to get more value for their money.
We'll all see how this plays out for the EU soon. I completely suspect that just like the great wave or unfounded worry about the EU mandated USB-C port change right up to the iPhone 15 launch, you'll still be able to find lint in your pockets, your ports will not be wobbly and USB-C tongues will not be breaking off en masse. You would think "we" would have noticed that parallel ourselves... but it seems many of us have not. So thank you for showing us all yet again... soon.