Worrying about sales figures of your bike relative to other brands is only important if you:
1) Need to feel you ride a popular bike/brand (some people seem to like that?)
2) Have financed your bike and need to re-sell it at a high price (so the bike needs to be popular and thus easy to re-sell) - this is a problem on a dirt bike IMO because dirt bikes take quite a hammering if you ride them properly and thus lose value faster than some shiny road bike that's "only ever been to the shops and back"

3) Need to feel secure that the company will survive to give you after sales service and parts.
4) Need lots of after market parts and want to know that the after market guys will support your bike.
But lots of small companies with low sales figures make great bikes with many happy clients, and have been doing so for some time such as:
1) Beta
2) Sherco
3) Gas Gas
4) Apprillia
etc
So maybe sales figures aren't the be all?
The nice thing for Husky now IMO is that we are now part of quite a big group so we don't have to worry about the brand being shut down (as we did under BMW who seemed on a path to oblivion for the brand), in addition we now are part of a group who understand off road racing and riding (again as opposed to BMW who didn't). And who clearly intend to invest quite heavily in development and growth of the brand in that market.
So its all good IMO, we have the best of both worlds in a way
The reason that that the 1190 is doing so well IMO, is that KTM have realised the bigger market is not in the hardcore of road riding sector, but in the "Adventure Tourer" sector where many people just want the high speed on tar, comfort, all the electronic gizmo's etc but maybe will never actually ride anything technical, although a small proportion might (same as the SUV vs hardcore 4x4 cars - far more money to made selling high tech SUV's). That's the market that BMW understand very well and have been making a fortune out of for years. KTM have used their offroad and track experience to break further into that market by providing a bike that REALLY delvers being great on tar, and still very good (by all accounts) off road!