[House Atreides]

“...And SCOTUS subsequently ruled that eminent domain can be used to put the property back into private hands, if the tax revenue on the property will increase. ...”
******************************************************************************
Yes, and THAT decision is one of many decisions by the Supreme Court that violate the words and spirit of the US Constitution, IMHO.

[DannyTN]

"The Keystone Pipeline system consists of the operational Phase I, Phase II, and Phase III, the Gulf Coast Pipeline Project, and a proposed pipeline expansion segment Phase IV, Keystone XL. Construction of Phase III, from Cushing, Oklahoma, to Nederland, Texas, in the Gulf Coast area, began in August 2012 as an independent economic utility." - Wikipedia.

So eminent domain for delivery of the property to an independent company is okay if it's oil related, but not if it's Trump's company.