There’s math behind it.

Walmart: they won’t even walk the cart one spot over to the car corrall.

Target: They generally return them at least to the corrall. Target lots are usually smaller and busier.

My local grocer: They’ll return them if there’s a corral in the current line. If they park on the outside, they’ll never return them.

If the place has a small busy lot with lots of corrals and isn’t poverty level shopping, most will make it back.

If it’s a giant walmart with one corrall per zipcode and people that are fed up with life, they might just let it roll down the hill into traffic.