The real big problem with corporate lobbying is that corporations do not work in the self interests of the people they employ, but the political power they wield is a function of the number of people they employ.
I think that it's very common for people to work for corporations that are actively working to undermine their workers rights, and using the political clout that their workers grant to do i
Edit: Unions do this too of course. That's probably the number one accusation that people level against unions to discredit the whole idea of unionizing labour. The union management will eventually work for their own self interest instead of for the union members
Turtles all the way down