Center Industries were the lowest bidder. Time after time. Now they're the sole contract holder for the EPM.
I don't understand what you like so much about Center mags, or the EPM. It's like the tan follower. The mil basically made a follower and spring different enough to no be a patent infringement liability from Magpul's anti-tilt follower. Then they wanted a better mag so they tried to get their cheapest mag manufacturer to knock off the Magpul's feed geometry with an aluminum mag. But they couldn't do a constant curve with it and it turned out to not be as hot as they had hoped and now the Corps and AF are buying Pmags. Which have already been vetted for the better part of a decade of war.
Center mags are fine. I like that they have two spot welds at the top and bottom of the spine and the concave floorplate is, IMO, better than the flat. I've never seen a Center, or any other legit g.i. mag, not function when new. I just don't like how easy it is to dent and/or bend them a little and now you have a bad mag. The way the gov't tried to knock off Magpul, and wasting the time and resources 'developing' what they did, when an already a better COTS solution was stupid.