Houghton Chemical? One consignee worth a carload or two a week (that could be transloaded elsewhere)? Everything else at Beacon Park was transloading, warehousing/distribution and intermodal destined or originated elsewhere. Demand had already shifted away from Beacon Park when the land was sold, accelerated soon thereafter, and continues.
Wrong location. No doublestack. No Plate F on the Grand Junction. Conrail and CSX didn't want or need to be there. The majority of their customers didn't want or need to be there. However, what was necessary to set the wheels in motion was a measure of public funding, no matter the motivation behind it. But, even without the land sale, because of CSX's business needs and the Commonwealth's transportation desires, very likely Beacon Park would have met the same fate by now.
As to economic reality, that's the underlying reason why demand had already moved far enough away when Beacon Park's land was sold and why it continues. Housing, retail, biotech, and higher education drive economic value multiple times the value of freight transportation demand-driving activities. Consequently, it's the freight activity, like rail-based intermodal, transloading and warehousing/distribution that is displaced to make way, moving to places where the land is cheaper, as was the case for Beacon Park and what was also seen on the ex-B&M.
All for the best.