It got me wondering why they don't do something akin to Microsoft's WSL which lets you run a persistent Linux VM in the background, but of course that would loo

It got me wondering why they don't do something akin to Microsoft's WSL which lets you run a persistent Linux VM in the background, but of course that would loosen Apples grip over the software ecosystem by letting users run arbitrary code from outside of the App Store. Heaven forbid people start making local Linux apps which spawn a web UI accessible through Safari. That's also why they will probably never do an iPad "Pro Mode" which boots into full blown macOS.