Extreme is having some monetary issues, according to some employees, and they recently replaced the CEO. According to my source in the industry who lives and works near there, they may not be around much longer.
West Coast Bullets has gone in and out of business several times in the past. They were in Carson City, NV, and I believe they still have a presence there, but the main business is in Lewiston, ID.
AmmoLoad has also been owned by numerous different people. When I was using one of their machines to load practice ammunition for our department in the 1970's, they were in the back of a boat shed in Newport Beach, CA. The "plant" was about 15' x 30', and cluttered with parts of the machines. I had to take our machine their in 1977 to have it repaired after a full primer column (200 primers) blew up and damaged the machine.
Hope this helps.
Fred