I'm not sure browser improvements would help here. App authors need discoverability and a sales channel. Android and iOS could provide that for web apps without

I'm not sure browser improvements would help here. App authors need discoverability and a sales channel. Android and iOS could provide that for web apps without wrappers, but they don't. So developers don't have any incentive to go with browsers. This is a business/social issue, not a browser tech one.