randomuser.833: This neither makes numbers nor money...
Linux is a server OS for the most part.
It is also pretty popular with embedded systems.
randomuser.833: And what is more important, Linux is not "the linux".
The kernel is. You can fork it, but most distros (I'm assuming this is what you are talking about here) stay with the mainline.
randomuser.833: If it runs on a Windows version, it will run on all versions above most of the time.
Not in my experience. Maybe the next version or 2. Good luck running most Windows Vista apps that have not been actively maintained on a Windows 10.
randomuser.833: If it runs on one Linux variant - it is not sure if it will run on any other...
Depends what you are running. Gui apps with a nice installer tend to be a bit of a mess if you want it to be cross-distro across most major variants. Containers and virtual machines will run reliably across distros. A lot of the tooling is also the same. I'd argue most of it is actually (if its not there natively, you can install what you need).
However, when you get down to it, there actually aren't THAT many wildly different distros. I don't fiddle a lot Red Hat distros or Suse, but on Debian's end, many many distros are just Debian variants and of those, many are Ubuntu variants.
randomuser.833: And every effort to fight this has been sabotaged by the Linux com, because everyone wants to do his own "next big desktop OS".
I think its more than that. Several distros are competing for mindshares in the server space too. For companies-maintained distros, that is where most of the money is actually.
randomuser.833: Btw, even Android was a clusterfuck for a very long time with everyone doing his own thing based on android.
And just now, with Android 12 (and 11) Google tries to bring it back to one foundation.
Yes, you can use the android apps on every system the android store is used on. Because that part is pushed to everything.
But when Google does their patchday each month just a small margin of all Android devices will see any update at all.
Many devices won't even see any update after being sold for their whole life. And this is not because the user is blocking it.
Is THAT your good example of how to push Unix to the next level?
The biggest clusterruck of unsecure devices we have ever seen.
I don't know of Android's history. I don't really like smartphones that much (Android or Apple, it doesn't matter, I grew up with desktops and am used to a lot of screen real estate, a large keyboard and a mouse). All I know is that they got more than twice Apple's market share for smart phones so they must be doing something right.
I have an Android. I don't use it much (phone, music, the occasional app my work or the government requires of me, Google maps for driving, a web browser to do the occasional search on the go... I think that sums it up), but its alright. It does what I want it to do.