What I have seen is that nowadays many carpentry companies offer complete timber frame houses. This has its advantages and disadvantages compared to large prefabricated house providers.
Prefabricated house manufacturers essentially all originated from carpentry businesses. Those who conceptually remained so have now almost completely disappeared from the market. As a side effect of the construction boom, only currently some are coming up with the idea to try this path again. And on this way, they will likely have to pay about the same tuition fees until reaching today’s series maturity level of the industry as the pioneers back then.
A few might succeed, by including the factor "short distance to the customer"—but really within a maximum of 50 km driving distance to the construction site—to offer competitive products as a company that still needs to learn regarding industriality.
However, it is strongly advised for those to use architectural planning: having built a thousand roofs doesn’t automatically make one a good house planner.
But in terms of wall construction, some prefabricated house manufacturers have caught up by now.
Prefabricated house manufacturers already had the lead in wall construction technology thirty years ago; the solid builders have caught up, and it took them until almost today.
By now, the insulation share is quite high in both, and the wall thicknesses have converged—today at a higher level. Thirty years ago, the prefabricated builders usually had about 16 to 22 cm wall thickness (and thus twice as good thermal insulation values as the masonry builders with 30 cm and 36.5 cm walls).
However, back then the image was still shaped by the wall structures of the 1960s—harshly put, "cardboard with pollutants"—and of course by the news images from the USA where houses fly away "in one piece" during tornadoes.
By now, the prefabricated house is an industrial product of high precision and differentiated detailed construction and "Made 2 Measure." Only the—often three to four selectable—wall constructions are "off the shelf," all proven in series (which the local carpenters still have to catch up on).