Cut out the noise: it is not the decline in investments that triggered the Australian quotas; it is a simplistic reaction that misunderstands industrial policy.
Regulation is often a matter of strategic vision, not economic conditions.
Governments, like Australia's, protect their local creation and cultural sovereignty in the face of the dominance of streaming giants.
For example, France established investment obligations long before any decline, demonstrating a logic of proactive protection.
Always look for the most direct, simplest motive.