I only know of one other company that creates the same product and that's MDC in Japan. I'm not that knowledgeable about the history and manufacturing of vinyl though, so I could be wrong. I just buy records because the music has more depth and sounds warmer.
Personally, I see this as a direct consequence of allowing companies to consolidate. I believe Apollo Masters bought out one of their competitors in the early aughts. Less competition means there are fewer companies to produce those goods.