Data centers pay Loudoun County, Virginia $26 in taxes for every $1 in services they consume - nearly $1.3 billion, 45% of the county's budget - which is why Loudoun homeowners pay the lowest property tax rate in Northern Virginia.
Plus, as I mentioned in another comment, while Loundoun County gets the tax benefits the whole area is affected by the DC's power consumption due to the regional power grid and shared infrastructure (i.e. the Potomoc) so part of my already high power bills was due to the data centers there and I got minimal benefits.
The data center problem seems to be merely a government corruption problem. Which is a problem, of course, but not limited to data centers.
Like I said in my original comment, I think really the problem is just the scale of the build out. Before the AI boom DCs were being built slowly enough that it wasn't a problem and/or costs could be amortized over time. But cost sharing agreements and subsidization needs to be done before the DCs are built the they're certainly not going to push for it, so the people need to. Lower state taxes in the future due to DCs subsidizing power is (sincerely) great and all, but it doesn't do shit for the families deciding between food and heating their house in the winter before those benefits kick in.