Why release content that requires having a free company house (HM airship expeditions) but then limit the quantity of those houses and leave people out of luck of ever accessing that content if nobody is selling plots?

Does anyone else think this is poor design? Content should not be restricted to a small group of people. Content can be extremely hard and I have no issue with that however everyone should have the option of engaging in that content. This does not seem to be the case with free company housing.

I wish they would just make housing instanced so every free company could have a house if they wanted to.