I'm taking it to extremes? LMAO. Okey dokey. I'll put my pitchfork away now.
How hard would it be to make absolutely 100% certain that nothing could ever stolen from the building ever again? Because if another theft did occur anyway..clearly not enough was done to prevent it and he oughta be shut down.
When I saw the thread title, I was all ready to beat up on the store owners for not securing their store better. They've had thefts in the past, and a stolen gun from their store killed someone.
But if the thieves are willing/able to knock a hole through the wall, I don't know what else they can do. I hope they at least have some good quality cameras in/around the store that can help identify the criminals.
It could be sheathed with 1/4" A-36 steel plate too. Or titanium....ballistic Kevlar.....all three...
I'm pretty sure Ken was looking at those block walls and musing: "Ya know..I bet somebody is going to bust a hole right through that soon. I oughta spend a lot of money to armor the building."
That's what I would have done.