But I think the effect will be that the companies building them will "sweeten" the deal for the local towns where they are building -- probably by way of taxes. And while that will be a drag on their development (by adding costs), the scale won't be bad enough to really hurt.
And in that sense, everyone wins. The locales will be happy to have the extra resources. And the ones that don't take the "bribe" -- or whatever you want to call it -- won't get datacenters.
(But I do agree that panic is overblown and counterproductive.)