Agree. I think the so called "cloud" is _the_ abstraction layer for apps and even across apps. Anecdotal example that just happened to me, I'm reading a PDF on

Agree. I think the so called "cloud" is _the_ abstraction layer for apps and even across apps. Anecdotal example that just happened to me, I'm reading a PDF on my iPad with an app called PDF Expert. When I highlight text in PDF Expert, I'm able to see the highlight in the native PDF Reader on iPad OS, and also when I open the file in the Kindle app, I get prompted to pick up from my last read location (from PDF Expert). All of that is possible because I store and read the same file from an iCloud drive. The ability to share state between apps and in a format that they can consume and mutate is they key here, so the user does not think about what software OS is actually running underneath, or even which application. The latter still needs more work to allow interoperability based on standards, the missing ingredient there is motivation not technology.