The idea is that legislator don't have the full context and don't know the impact of their work - so they welcome industry or matter experts. Which is quite reasonable. I would argue that the job of the legislator is to know what they are doing, but I can see it being hard for specific technical issues that really benefits from first hand experience.
I am not even particularly against the idea of donating money to make sure a particular issue is known to the public, so that the public can make an effective voting decision.
But all of this seems quite too much.
Companies have disproportionate amount of money to donate and much less synchronization issue that citizen.