I don't know how to pull the actual court documents without paying for them, but the article indicates the case was dismissed for lack of standing.
The plaintiffs tried to argue that as neighbours, they had an interest in the land usage being enforced. The court disagreed.
I presume the original family could bring a case? It doesn't seem like the 404 article or the Taylor Press article talked to them to see how _they_ feel about how their gift is being used.
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.
This is closer to the time of the lawsuit and has some more details - they sold it to a trust who then sold it to the city some years later, and the city rezoned it in 2005. It's possible they missed the timing maybe?