You can, but you shouldn't. The idea behind VLOS flying is so you can monitor the section of sky you are in and avoid other aircraft. Even in a rural setting there is always the possibility of crop dusters, line inspectors, or other unexpected aircraft.
The range estimates are with perfect conditions and your experience will vary. If the posted range is 4 miles then that means you should have no connection problems within one mile.
Legalities and moral judgments aside, flying beyond VLOS is reckless, because you will only see what the camera and app show you. The further out you are, the more likely you will have disconnect problems leaving you at the mercy of technology to get your craft back. Battery estimates are just that, and do not take wind direction and speed into account. If you want to fly out of VLOS then go ahead, no one will stop you. Just be prepared for accidents and a lost craft.