There's also the simple fact that TacPack is a consumer entertainment, product (insert blah de licensing blah de blah here) and Prepar3D v2 contains much of the same functionality itself, through the "Professional Plus" packages.
http://www.prepar3d.com/product-over...se-comparison/
L-M are aiming P3D at a professional military market and therefore have developed their own tools to work within it. Yes, $1000 per license is half the cost of a P3D Pro Plus license, but the simple fact that the core package contains content developed by a real-world military hardware manufacturer, versus a package developed by a consumer entertainment programming team, will hold a lot of weight with the target audience.
Ian P.
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