I would add to that, any company bidding for government contracts has to accept that all bids in that tender process, including the winning bid, are to be made

I would add to that, any company bidding for government contracts has to accept that all bids in that tender process, including the winning bid, are to be made public after the tender process is complete. Here in Australia too many governments agencies spend tax payer’s money, issuing big contracts to private companies and the all the contract details remain secret. One example was a company awarded the right to build a cross city tunnel toll way. The contract included a $100 million payout to a government body in exchange for massive road closures designed to divert traffic into the (toll paying) tunnel. All the road closures did was create traffic chaos and the secret collusion was only revealed when the tunnel company went broke.