yes and the other element of this that people who don't work for/with/at/in/against organizations that play this game is the repeat business aspect.
A politician more or less agrees to stake out a position as a service and perhaps introduce some legislative language the company helped draft. In addition to the direct donation the lobby group will pass money through a network of related entities to first propogandize the recipients district that whatever is actually an issue worth considering at the voting booth, and shortly after what they should think about. Now our politician has something to run on, how they are for or against X while their opponent gets painted as the opposite and their campaign is forced to stop and determine what their messaging even should be on the subject for several days while they get hammer, and painted as evasive if they won't answer questions.
If you pay attention at state level races you see this dynamic a lot, and you'll see it in federal House and Senate races as well in any media the campaigns are aiming at voters who are not already solidly team blue, team red, or committed based on of our marquee issues abortion, guns, income taxes, health care. Which is a increasingly tiny slice of the public, so if you are just watching national media you don't see a lot of this in the past elections but it is still very much there if you pick up your towns local rag.
Getting back the repeat business thing, the lobby groups and corporate contributors remember who played ball and got it done. They want to work with that person again if they can, so the incentive as politician then if you don't personally care a great deal about a given issue is to get things done. You want to be seen as a reliable partner, so the money keeps flowing your way. The best part is you can lie to everyone including yourself about it and say it is all just representing your constituents.
Of course it is really the tail wagging the dog. Its about telling people want what the big players want first then delivering that. This why the whole idea everyone should vote is really messed up. Companies trod out celebrities to propagandize people to do that too, for a reason they want the most easily propagandized people voting so they can use their propaganda power to create opportunities for their political puppets. They have a large part of the public conditioned to think voting is some kind of civic duty, but knowing anything about the topics you are actually voting on beyond if they are 'red' or 'blue' isnt ever mentioned... ^^This is why that is.