That the costs of collection will hit their competitors far harder than them, leaving them with a competative advantage. The reason so many CEOs and Wall Street types are Dims is because they discovered that they can legislate money into their pockets.
It is possible they see this as using a club against their competitors.
I think the other possibility is that they think they are going to get clubbed with this eventually, and they prefer to pick the club. They probably also prefer for there to be a standardized federal club rather than 50 varying clubs from all the states.
What I think is particularly stupid on their part is the fact that such a bill will get stopped dead in the House anyway, so why risk ticking people off?