What about this seems reasonable? The positive ROI could easily be overwhelmed by quality of life changes for current residents. Also not clear that this type of tech hq is great for a neighborhood.

How beneficial is this kind of a deal, compared with the other options of what could be done w the resources?

There is also an ick factor of negotiations like this, between private for profit enterprises and governments. It sounds a bit like publicly funded sports stadiums, which have been very popular yet financially terrible.