Is the idea that "when it benefits them" was... 23 years ago, and then they just sat on the land waiting for big tech to come along and want to buy it?
As mundane as it may sound, it seems most likely this was a clerical error made a long time ago. Maybe it can get unwound, but maybe not. If the people of this town are being screwed, it's by incompetence on someone's part 23 years ago, not by big tech.