Taking the Patriot Systems as an easy example these Private companies would further save everyone money if they repaired the systems in Ukraine. Instead, we have to move them into NATO countries and then do the work so we would essentially be removing a logistics issue. Given the foreign brigade already there I am not sure how much this actually changes anything because Russia no matter what has shown to treat anyone was the US or Europe the same way. These companies fill a gap that doesn't really escalate much in the grand scheme of it all. Plus Russia already uses them so if someone in the US wants to fight and get paid for it hey its a free country let them government shouldn't tell you how to make your $$$