Similar, but web pages are usable before fully "installed". Data has repeated shown that users quickly abandon websites that don't load extremely fast. Apps are like that, but even slower.
It's simple, when you want to do X, you want to do X, you don't want to do a lot of setup work before you start doing X.
In what world native apps are slower than web apps?
And where do you find "extremely fast" websites, with all this JS frameworks crap and gazillion of trackers being pushed to your poor browser?
It's simple, when you want to do X, you want to do X, you don't want to do a lot of setup work before you start doing X.