In the long-term, just "information", in general. That is everything around information and knowledge: acquiring it (including things like tutoring), storing it, protecting it (e.g encryption), manipulating it, proving that you have some information (identification, credentialing) etc
Basically, the field is limitless, since working with information is fundamental to being human.
Google currently tries to be "the information company", but insufficiently. They have lots of problems and I think there are a lot better ways to do things.
Immediate-term, the entry and starting point can be "storing information".
The fundamental idea behind that is the fact that our worlds are more and more digital. Everything about how we work with information is via computing, but our tools for doing that are still very limited.
The idea would be that the tool helps people 'save' anything. All regular "browser downloads" get saved there by default. As do everything else: is there a YouTube video you like and want to always have access to? saved (it's legal: personal, noncommercial use). Article you read on the web and never want to not be able to find? saved. A movie you watched and always want to have access to? saved (well, this isn't legal right now, but bound to be in the future. it doesn't make sense that we can't own media anymore and everything has to be streamed and you can't even be sure what platform currently has rights to it. you should be able to buy media and own it)
In general, we media consumption is primarily digital now and we should be able to store all of our things in our personal digital space.
You currently have all downloads saved to your iCloud by default, but that constrains you to the Apple system. This would be platform inter-operable. It would work on any platform and you would be able to save anything digital. Anything.
