App install friction is much higher than website visit friction, and with PWA's, coming back is enough to prompt the user to install the app to their home screen with a single click.
Learning something new is not the big obstacle. The big obstacle is investment vs return on investment. If you have to write the same app 3 times, that is a significantly larger investment, and potentially much smaller return if what you end up with turns away most of your users.
Each click in the install process reduces the number of successful installs by 20%. So, start with 1,000 interested users. If the user has to click six times to install the app, you end up with only only 262 installs. And then you have to activate them to keep them using the app. Data shows you'll lose an average of 80% of your users after install if you fail to activate. That means you end up with 52 out of 1,000 potential users.
VS PWA. Once click means you start out with 800 instead of 252, so then you just need to activate them, which gives you 160 activated users.
3x the users for 1/3rd the investment. I don't know about you, but these are pretty compelling numbers for me.