“Back during the Cold War, there were lots of mercs who’d fight for any anti-Communist regime that paid them enough, but only for anti-Communist regimes.”
Capitalism pays better :P
Actually, a lot of them were ideologically devoted to anti-Communism, but preferred the freedom to fight Communism as mercs, rather than being at the beck and call of their home country government that wasn’t a committed to the project as they were.