>Instead of making 600k and using that to fund whatever political causes or charities I should work for less and allow that nicer company to lobby politicians on my behalf?
What % of your money do you spend on political causes and charities, badrabbit?
Lobbyists probably also tend to hire ex-politicians as a form of (perfectly legal) delayed bribery; and hire family members of politicians (https://youtu.be/jXf04bhcjbg?t=1493).
Super PACs / "independent expenditures" are probably a big part of it. Revolving doors are probably another important mechanism (which allows to bribe people as long as the payment is delayed until after the bribe-receiver quits their job).
Another mechanism that may be important is bribing people by paying their family members (hiring them as lobbyists, investing in their companies etc.).