There are really many people who just do not install any apps. Reasons vary a lot, but these people always have access to a browser and use webapps.
The other killer „feature“ of webapps is that you can have a single one for multiple platforms.
The other killer „feature“ of webapps is that you can have a single one for multiple platforms.
That's a feature for developers, not consumers. Consumers will be unhappy if you tell them your mobile app doesn't exist on the app store and must be downloaded from some third party website.