Because they -are- providing value, and because dev resources are limited. If you're a dev, do you think your company would want you to spend 2 weeks on building a new feature, or on "considering the entire ecosystem"?

And more than that - if you have a team that only/mostly has web experience, they're going to use Electron, and... what kind of company would want them to stop and go learn native app development, or hire extra people just to get a native app?

Note: I fully agree with you, I do feel that as a profession we really have descended into a weird "ship the MVP, ship new features non-stop, forget quality" reality, and I dislike it. I'd love it if everything was resource-thrifty native apps, and dev teams could stop chasing new and shiny things and work on improving their existing apps until they were shiny polished diamonds. I'd love to point to an app and say "see? this is 20 years of development, look at how nice it is, how perfectly thought out everything is, how everything just works flawlessly".

But the fact that that's not happening is not because devs are lazy, or not worth their money. It just doesn't make business sense.