I agree. Many manufacturers of stone, brick tile etc. building materials offer ready-made, good quality textures for their products for instance. Now when it comes to modelling and visualizing a buildinh project, I guess at least some of the architects tend to choose wht materials should be built in based on what they can find this way.
The same could go for any kind of furniture, appliances in kitchens, bathrooms and all. (And at the same time, would be a good opportunity for some modellers to earn some extra income) π