You're overestimating the technical aptitude of the average person. If it's not a URL or in an app store, it basically doesn't exist for a lot of people.

This may be very true for the generations born with tablets, but I'd expect the average layperson to be accustomed to 30 years of installing software or moving things via floppy drives or USB drives, but be wary of getting something from the Internet as it always was the source of malware.