Well, for the Railroad Magnates went the Spoils.
& if one becomes familiar with the Credit Mobilier Scandal, those shareholders as one example, benefited from insider trading akin to the style of the Pelosi's, Clinton's, Romney's, & Biden's in Ukraine allegedly.
Emancipation being proclaimed and acquiring a job, education, or owning your own house are not the same as being free. Especially when a person lives in or near cities and towns that have been devastated by war.
Marx is arguably a racist SOB, and an admirer of Lincoln.
Read his letter to his buddy Engels dated July 30,1862. Here is a link with excerpts
https://www.econlib.org/should-karl-marx-be-canceled/
Freeing Slaves was not Lincoln's initial goal, yet it certainly was the fabulous result of his deeds, &
yet it definitely was the goal of his Team of Rivals, especially FreeSoiler Samuel P. Chase's ;
Maybe "John Brown's Body" could become a singalong song ?