From the comments that have mentioned the efficient programming languages, my guess is there’s a bunch of devs in here that never got past the “c++ is hard!” stage.
The first time I saw an office app launch in my browser, I was both impressed that they got excel to work in a browser and appalled that they wanted excel to work in a browser at the same time. And I’ll admit that it does perform well considering it’s running in a fucking browser, but I’ll still launch the native app any time I actually want to work with a file that’s opened in the browser.