Earlier quoted context omitted.
There's always a danger when you rely on outside provider for something that's critical to your business or life. Sometimes you can't avoid it or it's completely infeasible to, but choose carefully. I see too many companies using AWS for stuff they could fairly easily self-host.
By "self-host", don't you mean "rely on a landlord / ISP / colocation facility"?
Obviously, web-hosting stuff is a little different. AWS is a lot more than just web hosting: it's a cloud computing provider.