What solution do you propose for private businesses? Having cameras is sensible, if not a must. People are abusive, burglars break in, staff steal, etc.

I don't have a solution (and would be mindful any 'solution' could be unreasonably burdensome, unenforceable, or have unintended consequences). I just point out that the past couple of decades have seen a dramatic change how easy it is for people to be spied on, often in sensitive environments and unbeknown to them.

You can install cameras in a way that you only film the parts relevant for potential break ins. In my country this is demanded by law. So not directing cameras on public streets or other properties.

Aside from that, camera necessity isn't real, affordable cameras for mass deployment are perhaps not recent, but there certainly were other ways in the past to handle crime.

You clearly didn't read the associated paper. Employees stealing from a business is a far better outcome than letting people with power abuse it.

Worst case in the former: A business fails.

Bad case in the later: The business succeeds and perpetuates it's abusive practices

Worst case in the later: mass genocide and the total extinction of the human race.