It's mostly psychology. People have been wired to equate apps = app store. Trying to educate users to simply click "Install this to homescreen", while seemingly

It's mostly psychology. People have been wired to equate apps = app store. Trying to educate users to simply click "Install this to homescreen", while seemingly simple, seems like a huge gulf for most people. I'd imagine that app installs for app-store variants to PWAs is 100:1.