Complex sentence: Interestingly, The CW is 50% owned by TWC's parent company, Time Warner; thus, by blocking cable carriage for the network in this market, the company is ostensibly hurting itself.
Split into simpler sentences: Interestingly, The CW is half owned by the cable system's parent company, Time Warner. Thus, by blocking cable carriage for the network in this market, the company was ostensibly hurting itself.