it works when you are in a physical store, because the 'exit friction' is much higher, and you're much more invested in physically being there.

closing a tab of a website or closing an app is easy. mild frustrations equal lost business on the internet.

that's why sleazy salesmen work in stores.

if you want to learn more about this, look up 'captive market'

https://en.wikipedia.org/wiki/Captive_market