I currently "add to home screen" for most things. I edit my images online, and develop code using cloud9 ide, etc. There are few things I need apps/programs for right now, and that's improving day by day.
iPhone is dropping heavily in world wide market share, but they still have a lot of the wealthy users. There is a non-zero chance they get niched out of prominence by Android (aka every other manufacturer in the world), at which point network effects start encouraging Android-first or Android-only development. There might be a point where Apple needs to double down on the web, and/or maybe kill off apps, like they did flash, to still have the latest "apps".