1: yes See corporations like red frog and push-x for examples.
Now, to add to that, it is possible to haul NPC goods, but it’s generally not particularly profitable. Either you’ll haul goods for other players (on contract.) or you’ll buy in one system, haul to another, and try to sell it there.
This isn’t a quick and easy way to make isk, and you will be a target for some other players. so don’t put everything you own in a single ship and try and move it.
Mining is a common thing for people to do.
2: Depends on what you mean by successful And what you mean by combat (are you including NPCs, for example). In general, you won’t be forced to do anything. And some of the highest income jobs have no combat involved. They just require a bunch of money to start with. (it’s percentage based.) Like trade and manufacturing.
3: Fully automated.
4: Be aware that when you undock, you are a viable target. There are things you can do to reduce the chance of being shot, but nothing can eliminate it. So don’t spend everything on a single ship, where if it’s lost you’re screwed.