Console operating systems, Whats really going on?

[TallSilhouette]

1. What does the console really do with that 2.5-3GB of reserved RAM? Besides multitasking with other apps and constantly recording/streaming while you play, I imagine much of it is a precaution to not repeat the situation last generation with tiny memory budgets severely hampering new capabilities. They're reserving more than they need in case demand for something useful but intensive comes along in the generation. We may see more memory freed up for games soon as that 'new thing' hasn't seemed to appear.
2. Why is it that we have operating systems that are leaps and bounds more functional than what we have in consoles which run on significantly less memory. (we can have an entire windows operating system on as little as 2GB of ram. Kinda relates back to #1, and consoles are supposed to be about focused, closed, simple design, not massive versatile functionality. A console OS might not need all that memory, but neither do 1080p games.
3. Why can my android phone keep my game state saved in the background for any number of apps or games I'm playing yet my console can do this for only one game at a time? Stability. Your console's running far more sophisticated and demanding games and probably crashing a lot less doing it.
4. Why are features so hard to implement and take forever to come along when everyone that owns the console is using the exact same OS and running it on the exact same hardware? A bit miffed at that myself, but I suppose the OS teams for these console manufacturers are still relatively small. That said, some updates are quite substantial and it's not like major Android/iOS/Windows updates are any faster.
5. Why can we not use the consoles we have to build "small" apps for the console? Closed ecosystem. Just the nature of the beast.

Those are my best guesses, anyway.