In the UK, the construction industry has a great many cowboys, incompetents and scam artists. There's a lot of demand, so the market doesn't force these people out of business. And the courts can't do much if it turns out the guy gave you a fake name and address - or if the company that did the work went bankrupt.

And we've long had governments that take a hands-off, laissez-faire attitude - expecting the market to sort things out. As they see it, this insulation can be done properly, building owners chose to buy it, why ban a promising new green technology when the UK has millions of under-insulated homes and an energy price crisis?

Similarly, the UK has a load of tower blocks clad in flammable insulation after vendors Kingspan and Celotex scammed their way through fire safety testing - but somehow all the people who made money off it have disappeared and the taxpayer has to pay to remediate it.