Olbermann has had a turbulent relationship with GE for years.
He symbolizes the problem that arises when a major corporation like GE wants to sell advertisers access to the American Left. They must get in bed with a firebrand like Olbermann who pushes an anti-corporate liberal agenda.
As the Comcast merger took shape, Olbermann's fate was sealed. The top brass at Comcast are major contributors to the Republican party. Olbermann's exit has actually been in the works since the Comcast merger was official. It was leaked prior to his November scuffle with the network.
Corporations don't want to pay higher taxes or face strict regulations; therefore, corporations hate the left. MSNBC primetime was the final liberal outlet. You can kiss it goodbye. The American Left will eventually be relegated to a faraway corner of the internet, with all the other carnival exhibits that cannot get funding. Welcome to media consolidation. A handful of mega corporations own all the media and they are slowly erasing the liberal voice.