Whilst you're not wrong in that people need to judge for...

Whilst you're not wrong in that people need to judge for themselves the risks of any investment that they make (and there is indeed a potential risk of a conflict of interest, although the fact they have a sizeable stake in the company and weren't paid just a flat monetary fee means they're probably not intentionally trying to flog a dog stock for the up front cash) the rest is misleadingly oversimplified.

Just because someone sees a good investment doesn't mean that they will keep and try and corner all the shares. Otherwise every successful miner would never make it to IPO - some cashed up institutional investor would just acquire 100% of the shares. Everyone (especially professional and institutional investors) has rules about

1. How much of their portfolio they want to invest in a single stock (diversification)
2. How much of a single stock's shares they want to buy (governance and effort requirement)
3. How long they want to hold stocks for (their portfolio objectives are independent of a single company's success)

If their purchasing capacity is maxed out under their own rules, there is no reason why they'd then stay quiet about their opportunity.

People are so quick to come out of the woodwork to try and look smart but at least do some research. You're embarrassing yourself with your completely baseless and generic rant about some kind of scam that ASIC should be looking into