I don’t think they care about the policy. They just see a one sided debate: companies will to pay and an indifferent public.

That’s a false equivalence. Companies can pay people to agitate for them full-time. Then they can pay the politicians, albeit indirectly. Finally the public have the privilege of using their free time to agitate against the politicians. Which just starts out as unorganized disruptions, “people were mildly inconvenienced on their way to work today”.

That versus cash.

Sure, you're up against "the purpose of a system is what it does". I'm sure many mainstream politicians actually earnestly care about individual liberty and reigning in corpos - it helps them sell themselves to the public. But the net effect is that when the dollars come calling, enough set aside those ideals to make the corpo agenda happen.