Desktop Linux is (becoming) usable for a normal person just in time, I was surprised how easily a non-technical friend switched over to Bazzite (immutable fedora with gaming extras).
> Visa, Mastercard, Paypal
The EU has already been working on a "Digital Euro" for a while
> all social media commonly used
I'm hoping more decentralized social media continues to pick up steam
The MIR payment system started functioning in 2015, long before Visa/Mastercard pulled out of Russia
>Android app store
Initially there was some fragmentation because several companies raced to develop "Russia's #1 answer to Google Play Store" but everyone eventually settled on RuStore developed by VK (Russia's Facebook).
Generally, Russia already had replacements for most major American services long before 2022, and with better market penetration: Google => Yandex, Meta => VK, Uber => Yandex Taxi, Amazon/eBay/Craigslist => Ozon/Avito/Wildberries, etc. Lack of own app store was more like an oversight. Europe is at least 20 years late in the game.
If there was a real conflict between the US and Europe, whether an open conflict or "cold war" type, you could be absolutely certain that every supply chain you're using is going to be mostly under US control. Open source is irrelevant for that issue, you're not compiling your own Linux distro and all software and your compiler toolchain and use your own repo hosting (and switch off all undocumented backdoors in your CPU's "management" engine). Funny enough, even if you did that, the hardware on which you run all this is almost certainly fully under US control. Guess where American Megatrends, Phoenix, AMD, Apple, Microsoft, Intel are located. The same for every phone operating system. Binary blobs nowadays either come from China or from the US and their chip manufacturers (e.g. in Taiwan).