I think this is where one of those instances where a sponsor is looking out for themselves and not the cycling community.
The whole idea of sponsorship is an insane gamble. They'll throw a ton of money out there in hopes that one of "their" riders makes it to the podium, simply for more exposure for their brand name.
When things go against what they view as "good" PR, they pull out, which I understand. The idea that so much of cycling's exposure is hinged on sponsorship is sad. I mean, I know someone has to pay for those bikes, and the travelling, and the staff for the team, and the riders' salaries etc. It isn't free, I get that.
I'm glad the team is still there; what's really funny is the TdF started out as a publicity stunt to sell more newspapers than the organizer's competitor. Henri Desgrange what quite an interesting character.