I don't think it's possible to 'corner' the AR15 market. The whole point of the AR15 market is how diverse it is, because of relatively low start-up costs, which I suspect are due to the use of aluminum machining vs. steel and the tooling required. I saw a website where a guy showed how to BOLT together an AR15 receiver from slabs of aluminum. And another that showed exactly how you could basically machine your own with a drill press (it was amazing, explained why all the little corners cut on receivers are round not straight).
Heard the same Co. has a big stake in Daimler Chrysler, so don't worry about them having some sneaky gun-power-grab going on.
And why would they liquidate the companies not working out when they could simply fudge the books, play with inventory numbers, and sell them to some other sucker?
But as a general rule, yea, if your company is not making a profit you really shout do something different, change or close. Charities are a whole different industry.