It could be similar to the way the natives deal with the player in Colonization. At first they’re giving you stuff to help the poor little guy out and then when you start to encroach on their area they get more and more uncooperative.
Please tell me that people here have heard of at least that game. Sid Meier’s Colonization might have been a little less well known but the game dynamics were pretty good.
It’s getting a little worrisome that the only two games this has been compared to so far, besides Blockheads, are Minecraft and Vikings.