Berghaus is like one of those steady brands that just roll along with solid stuff but nothing that gets people excited, kind of like Peter said. The brand has not messed up like Karrimor, which was the other equivalent brand in the past. Whilst it is not for everyone it does sell to a wide range of people. On a rainy day in most towns you will see a Berghaus waterproof on more than a few people going about their business shopping. Probably also see Sprayway too. To those people Berghaus is simply a waterproof coat simple and normal looking, no external zips in lurid colours or other such "technical" details.
On top of that their relationship in the past with UK mountaineering and the huge reputation of the likes of Bonnington has further cemented Berghaus as a bulk manufacturer of waterproofs and sacks. although Bonnington is more of the past these days. Sorry but age stops us all doing what we want eventually.
Personally I prefer the smaller brands as they tend to take chances and advance the designs. External zips in lurid colour and all. I use Montane, Haglofs, montrail, Lasportiva, asolo, Marmot, BPL-UK Honey stove (occasionally) and others I can't remember. Some are large brands others are becoming larger through reputation (Montane). I find the old standard, UK brands such as Karrimor, Berghaus, Sprayway and Lowe Alpine just don't suit me these days. I love Rab but don't own their stuff as I find the next best brand a better deal.
Berghaus is still quite good and still has its market. Not dead or dying yet.