1) From a pure manufacturing perspective, consolidation makes all the sense in the world, especially with products designed for modern manufacturing methods.
2) The older a product is, the less likelihood it was designed for modern manufacturing methods. Dare I say "1911" or "lever action rifle?"
3) Older products can be brought on-line with 21st century manufacturing, but it usually requires a healthy (and expensive) injection of technology, e.g. Ruger's 1911 line or Cabot arms' breakthrough EDM'ed 1911s.
4) Eclectic small group cultures cannot survive consolidation long term. At least, I've never seen it happen. Efforts to maintain the smaller group culture within the larger whole either slowly trickles out or backfires.
5) Firearms are often more than the sum of their parts, which is why the market sometimes confound the industry.