What are you talking about, most of the advertising in those industries has nothing to do with whatever their lobbyist are doing. It's just menial PR shit like "Save 20% at United Healthcare", or "Work on cutting-edge technology at BP", or "Monsanto now offers consulting services to help you optimize your crop gains". Maybe once in a while they flash some statistic about how diverse their workforce is or whatever but most of it is just generic commercialism.
It's only really in the valley that companies think listing opinions that significant percentages of the country disagree with is a good way to build marketshare.
I should say for some parts of business it seeems impossible to entirely avoid political messaging. If BP, Monsanto etc. make 100 ads, 90 of them will not be political. 1 will be actually political, but 10 of them will definitely be accused of being political. It will create a problem for those trying to draw a line.
It's only really in the valley that companies think listing opinions that significant percentages of the country disagree with is a good way to build marketshare.