Our freeports aren’t our core alliance system structures, and Astrahus are astoundingly cheap, particularly when you’re sucking vast amounts of PI from one’s regular alliance wormhole systems.
On the plus side, if someone attacks a freeport, it gives us almost guaranteed content and practice. If we happen to lose it, no big deal, we just drop another one.
The reality of wormhole space is that unless someone wants a particular system or the structure is actively onlining, it’s just not worth the time and effort to take down a M-sized structure.
Most of wormhole space is not actively occupied. Our network gives small corps and individual players an opportunity to try out wormhole space with little start-up cost. We get a little tax revenue. The need to occasionally replace a structure is factored into the business model already. More people in wormhole space means more potential content for everyone. Win-win.