At first I was skeptic like most here, but it doesn't sound impossible at all. If you fix the most pressing issues regarding security, improve productivity by orders of magnitude (with great UX by default, even at the expense of some customizability), and can make it run on an iPhone, it might be a path worth exploring, yes.
Have you heard about Urbit? It seem to be also a "new internet" kind of project, but more focused on decentralization, which is very important too. I'd be interested to know your thoughts about it, as well as any progress about the "NewWeb" in case it becomes an actual project.