Doesn't all regulation stifle innovation? If I wanted to sell a homes in a skyscraper made of papier-mâché, building codes would prevent me from doing that. But that's not necessarily a bad thing: the first time someone leaves their soldering iron on while they're not using it, the building burns down and we have five hundred dead families on our hands. "Innovators" tend to think about the good aspects of their ideas…
Government regulation is in just about every case either not needed at all or better provided through non-coercive institutions. Since government innovates more slowly than private industries, government regulation tends to become outdated, going from common-sense prudence to arbitrary burden on innovation. For example, right now the Mississippi River in the US is flooding, destroying many homes. This is a huge loss…
PS: Not to side track to situation; we are talking about building materials and you can use a wide range of things including straw and dirt in the US so what's missing?