I'm not sure who eats the cost of the theft, but I'm guessing it's the same people that make almost no money from the sale of the fuel. These were not wealthy people; they were working obscene hours and barely scraping by.
They said they get $0.30 per gallon which mostly goes toward the other overhead, leaving $0.07 of profit per gallon.
Things will be "interesting" over the next 10-20 with the switch to electrification - yet another entire sector that may no longer be viable for small/medium independent owners. (but, time marches on - we don't see many people lamenting the "buggy whip manufacturers" from days of old)
Though there is still need for a store close to home where I can get a bit of milk quick, my morning donuts, and all the other things. I hope such stores move closer to where people live - suburban people should experience the big city convenience of walking to such places and when they don't have a hope of competing for drivers they may as well move closer to where people live. (if zoning allows!)
Many places will make the transition but you'll also need to change your interior to dedicate more space to people waiting while charging.
Having a zero-margin product stolen, means that your loss is 100% of the sale price.
This is where we are at now, the ultimate luxury, everyone has complete moral immunity for life for absolutely anything they do so long as someone else has more money than them, never mind if they are in the top 10% of the world's wealthy overall.
Something as straightforward as "stealing is wrong" doesn't apply. "Stealing from people I don't like is fine".
I've never seen anyone introduce the idea of "wealth absolutism". From your comment though I'm not sure if you would allow the bottom 10% to feel complete moral immunity.