The model farm world has gotten big in the last few years, going to shows is evident of that, they have gotten bigger and more new collectors are appearing so the demand has gotten bigger so the likes of UH are gona cater for that demand because they can afford to, there quality is good but isn't as good as the likes of Wiking or scratch builders.
But the likes of myself and others who have started collecting in the last few years are opting for the mainstream manufacturers just to build up a collection, especially because they are cheaper to buy, but I am now at the stage of collecting that I am after collecting models that have been specially made, and make my collection unique, so I don't mind going to a show and spending a £100+ on 1 model rather than the same amount of money on a few mainstream pieces.
Another reason new collectors are going mainstream is they don't understand the work scratch builders put into there models, so they think that they are asking to much ( I was guilty of that) it took me a while to appreciate the hours and work these people put into these models.
So scratch builders shouldn't worry, every collector is looking something unique for there collection