Have you evidence?
Only 6-8% of us political funding in 2024 came from business-PAC contributions.
https://www.fec.gov/resources/campaign-finance-statistics/20...
Further splits here: https://www.fec.gov/resources/campaign-finance-statistics/20...
There are exceptions to this of course but most politicians answer to voters much much much more than big business.
Why not do the obvious thing that can still help? There are some simple things we as a people or a conglomeration of peoples can do to curb the enthusiasm for state level corruption. It is doable. It will not solve everything - but surely we can still do it.
The conclusion does not necessarily follow the premises