The US has that stuff in bad neighborhoods. The wheel clamp is probably pretty standard in the urban areas and/or poor areas. Out in the well-off places where there aren't wandering street people, wheel clamps would be pointless. The expense, including repairs and downtime, is not justified.

The U.S. has that stuff in good neighborhoods too. It turns out the problem is less homeless people, and more affluent people who can't park close by and are too lazy ass to ever bring those carts back.

(I mean, seriously, Tarzana is neither urban nor a bad neighborhood. It does however have an entitlement surplus at the local Whole Foods)

This is an important distinction in general. Many of the ills Aldi attempts to combat generally are non-existent in other grocery stores in some places, thereby only serving to inconvenience those customers for no gain.

The ills Aldi combats are work that costs the money, like stockers and baggers.

But making customers do the work, Aldi can make more profit and/or customers can save money by doing their own elbow grease