Same here; I remember playing ARMA 3 during the early-2013 public alpha, which was an eye-opening look at how the gaming sausage is made in real time (and before Early Access was as established a concept as it is now).

I was rather disappointed when I heard that they had been acquired by BAE Systems, but on further inspection it seems like that was only the BI Simulations arm (responsible for VBS), now rebranded as OneArc. My guess is that a release like this wouldn't have happened were they not still independent.