I considered tagging along in my gunboat... I was in Theta at the time. But I looked at the players list and saw more ships I knew to be Outcast than other ships (and apparently some of those 'other' ships were Outcasts or allies too), so I figured it would be a bit of overkill. Only time anyone should invade a system is when there are a decent number of defenders around (equal or greater than the attackers).
Anyway, an overt offensive attack against Gamma isn't really Alejandro's style. His thuggish cousins can rot on their rock of a planet and play with their useless alien trinkets... He has more productive ways to spend his time.