The measure of success is often thought of as having the ability to buy things. Individuals exhibit their worth with the zip of their credit card. The accumulation of wealth has been reduced to the ubiquitous ‘bling.’ On a larger scale, corporations buy time, space, and people. Herein, this is progress. The commodity is king.
According to Karl Marx (Capital Vol. 1), the commodity is, first of all, an external object, a thing which through its qualities satisfies human needs of whatever kind. Oil does just that from the local to global scale. It has created wealth for the smallest farmer stumbling across it in their back yard and built empires in far reaching countries. Dependence on oil currently affects the price of grain, one’s mobility, and alters intra- and interpersonal relationships.
I’ve always found the final scene of There Will Be Blood intriguing because it is a culmination of a co-dependent relationship. Oil was the external object for Daniel Plainview and Eli Sunday to satisfy their needs. Neither were willing to address what was missing internally, but oil was the means of covering up their emotional wounds. Plainview was willing to kill for his desires (since the buy-off wasn’t enough).
The final line, “I’m finished” can be construed as Plainview eliminating competition or beggars for the final drop of oil. It could also be seen as his life being over now that he made an unhealthy choice. The tone in his voice may be a sign for his butler to clean up the mess. Regardless, Sunday paid for his dependence on oil and his relationship with Plainview with his life. Nothing gained. In the end, the commodity created wealth at the greatest expense: freedom.

