Would it be possible to lower barrier to entry that low?
To the point where installing some Linux distro would be as easy as installing a game on Steam or installing an application on a phone?
There is existing software for installing Linux from Windows.
For example, old WUBI for installing Ubuntu, and linixify-gui (fork of abandoned tunic) apparently does this as well.
So question is, should there be some effort put into making a modern installer of this kind? Something that even the person with the smoothest brain can use to get Linux on their PC?
Are there any existing projects that try to make this happen?
There’s not a lot of ways to directly do what you are talking about. Closest it can come up with would be a small program that shrinks the windows partition, creates new partitions for the linux install, reboots into the new linux system, kicks off a migration tool that deletes all the data you don’t want to bring over, shrink the windows partition again, migrate data over in chunks to the home folder partition, resize and move more chunks, eventually deleting windows entirely and leaving a fragmented mess of a Linux install with a lot of chances for shit to go wrong.
It’s safer and cleaner to back up, wipe, start over.