There. Are. Other. SoCs.
Oh yeah, and you can't actually buy the part alone. So you're stuck buying their board to stick in your project.
At the end of day, it's embedded Linux. All those wonderful tutorials and source repos can and will work on many other parts. There's nothing magical about the RPi core, and seriously really nothing magical about the hardware. Once you boot off of eMMC you'll never want to go back.
If you need a home automation/print server? Get a $40 used Xeon workstation on eBay.
Last time a looked (which was a long time ago), most other SoC's led you down hyper-version-specific patchy nonsense to Linux to run on them. Good to see the field is improving :)