The only way this makes sense for communities is as a kind of "finder's fee", i.e. you might argue that if BigTechOne™ knew that they'd have to bid against BigTechTwo™ they'd never even bother to scope out the location.

Still, if the prospecting is the bottleneck there could be 3rd parties (or even the tech companies themselves) entering into agreements with towns which allow both a finders fee and open bidding for the lot.

^ This right here.