Look, they're too busy changing the UI completely every two years to change things like functionality.

package managers technically exist, including Microsoft's own winget, and if you're on windows they're a decent choice, though they do come with a multitude of issues

there's even a decent ish package manager GUI called unigetui

how would it change, netbooting still requires significant infrastructure that only nerds and business have and almost no phones have support for USB mass storage device emulation (technically not emulation) so it still needs a USB drive or DVD.

edit: misread the previous comment, didn't see program