Most people actually just prefer convenience with web apps you just instantly go to a domain and can check it out also secure and sandboxed by default since I don't have to worry what they are doing in other parts of my system which is a big worry with current supply chain attacks and what not.

Their "PWA" marketing holds them back in addition to financial incentives of Apple and Google. Most people aren't familiar with term "PWA" also why is "installing" a feature who wants to manage these things through their OS which a lot of normies already find confusing. People want plug and play the whole benefit of pwa (seperate window etc) could basically be exposed as per origin setting inside the browser itself and if user want they can pin it to their desktop. Since in my own testing there isn't much difference it terms of API's exposed only lack thereof like no proper user controlled storage retention settings for apis like OPFS and also lack of syncing directly to a user specified folder across all browsers. If they improve these files workflows you will see a lot more robust web apps.