When appointed to a position of power, be it as a prime minister or a councillor with power to approve developments and business zoning, all of their investable assets need to be placed into trust out of their control.
As a person who has come up with and lived off his ideas mainly in the plumbing industry I feel that a state backed "Insurance" to uphold the protection of that idea could effectively prevent the idea being taken into others states.
Switzerland is a nation that has direct democracy and frequently has referendums on many issues. As a small nation the Swiss have got this down to a tea, however as Australia is very large this would be very costly unless we looked to the internet.
How much of the price we pay at supermarkets for milk, fruit, vegetables and meat go back to the farmers that produced it? Common whole foods should include the proportion of the cost that goes to farmers, processors and the distributors/vendors.