what existing legislation are there that protects businesses from the government in Australia?

There are several pieces of legislation in Australia that protect businesses from government interference, including:

1. The Competition and Consumer Act 2010 (formerly the Trade Practices Act 1974) - This law protects businesses from anti-competitive behavior and unfair trading practices by prohibiting actions such as price-fixing, collusion, and misuse of market power.

2. The Australian Consumer Law - Part of the Competition and Consumer Act 2010, this law protects businesses by setting out regulations on consumer rights, misleading and deceptive conduct, and unfair contract terms.

3. The Privacy Act 1988 - This law protects businesses by regulating how personal information is collected, used, and disclosed by businesses and government agencies.

4. The Fair Work Act 2009 - This law protects businesses by setting out regulations on employment conditions, including minimum wages, working hours, and workplace rights.

5. The Corporations Act 2001 - This law protects businesses by regulating the operation of companies in Australia, including requirements for financial reporting, governance, and disclosure of information to shareholders.

Overall, these laws aim to ensure a fair and competitive business environment in Australia by protecting businesses from government interference and promoting transparency and accountability in business operations.