Maybe the government regulation as practised by cronyist goverments. Seriously, I don't think that a hypothetical government enforcing standards for square feet measurement would create a huge barrier to entry into the property business.
You'd prefer it to be legal if your gallon of gas only actually contained 3/4 of a gallon?
Govt gets more involved as the amount of money goes up.
The NYC govt doesn't much care about a small deli. It gets seriously involved if you're developing a whole block, or trying to build a wal mart.
"Most barriers to entry are created by government regulation."
I did not say:
"Most government regulation creates barriers to entry."