"Lobbyists" is just the label attached to the people who give input. Yes, they're professionals and yes, this is where the corruption happens, but that's just the nature of seeking input.

You surely don't expect companies to not advocate for themselves and be wholly altruistic? A lobbyist is paid to advocate for their client's interests. Sometimes that aligns with the public interest, most of the time it's a grey area.

There are plenty of opportunities for corruption in the interaction and those need to be addressed; rebranding 'lobbyists' isn't one of them.