What alignments are feasible for Enor & Ganji?

[Kish]

So, as much as we know that they were, amongst others, working at least once for at least one evil government (we don't know about how many of their contracts have been with good governments),

This is true, but how far do you suppose they'd have to travel to find a contract that wouldn't be, de facto, for Tarquin?

Unless he greatly exaggerated the success of his scheme to date, I'd say "pretty far."

So if doing nothing against evil makes me evil - does that mean that not hindering someone to do good makes me good?

No, because good and evil are fundamentally different, and you very rarely get a valid statement about one by playing fill-in-the-blank with a valid statement about the other.