I'll tell you. Microsoft and Apple need to protect their native app license revenue, so they hobbled Netscape, brought browser development in house, and made a prohibition on allowing web pages to be integrated tightly into the OS.
If those electron apps could get the same OS integration in the browser as native apps get, the distributable could be kilobytes, even smaller than your Delphi executable.
But how would Microsoft and Apple make money if they're just a host for web apps? They're not going to turn themselves into a commodity/utility.