I live on a slight hill. Notihng compared to the ones I grew up with in Dorset, or those in the Lakes, etc., but enough to cause issues with summer tyres when it snows. It is difficult to tell, but the hill must steepen just after my house, as anyone who is going to get stuck, gets just past my house and then struggles.
One memorable year, there was a guy outside struggling, kept taking longer runs at it, but still getting just outside and couldn't get further. This was in a Jag X-type, with 4wd, but obviously on summer tyres. As we're a cul-de-sac, with just over 50yds beyond me, I don't understand why they don't just park opposite, and walk. They can collect it when the snow thaws.
On this occasion, after the guy had been faffing for around 30 minutes, I needed to go out. He sat still while I drove around him, without a slither. When I got back, about another 30 minutes later, he was still trying. (Yes really) I drove around him again, beyond his best point, and reversed gently back onto my drive. (I didn't have to go quite so far up the hill, but it seemed 'necessary'.) He took the hint, parked it and walked.