Anyways on the topic of the thread... I am against land ownership. Technically we are just hired to come in terraform and cleanse wildlife for major companies who already own the claim to the planet we are working on. So I do not see how we can fight for territory when we all work for the same employers. Maybe for glory, maybe for more money from said employer, but not over the territory the employer already owns. They could just end our contract and put us on a hit list for trying to steal their property.
You, or your guild, wouldn't own the territory, but rather you would be assigned there to perform a task, either terraforming, scouting, or gathering.
Doesn't necessarily have to be ownership if it's a thematic confliction, could be the above. If it's a mechanical conflict of interest though, I don't know what to say. It might turn out to be impossible given the scale of the game, or maybe a mechanic so far into the future it'd be almost pointless to discuss it for another couple of years.
It all comes down to the preferred scale of player impact. Do we want terraforming to be a global event, with players pitching in resources and the world evolving over time? Do we want it to be a pocketed thing, or something with several major points of influence where player companies can influence large regions of a globe? Larger scale operations are more emotionally detached, while smaller scale operations might seem hopeless. The key may be to find the happy middle ground, with 5-8 major points of influence on a planet, similar to large maps. where players can have an impact. The effects would bleed over into others (since you are influencing the climate and environment of an entire planet), so focusing on one point would help or hurt the adjacent depending on what's being done.