I've noticed as the companies get bigger (and we deal with some pretty big international companies) they tend to not give a sh*t about you, either as a customer or a supplier.
If you are lucky, you get ahold of one or two contacts that aren't morons and have some sense of being able to structure their time.
or, you can have a realtor who takes nearly a year to show your place after to list it with them.
Over in the states, there is way too much competition in the realtor market for that to ever be a problem, plus there are some people who are selling there homes themselves (for sale by owner).
Additionally, pre fab houses are just coming online within the last 10 - 15 years in the states; not sure why, contractors kept getting more and more expensive, less and less reliable and had a knack of only fitting you in when you planned a weeks' vacation to someplace.