Thats not how this works. Extra money goes to investors who then choose to do what they want with it.
Rather, seek subsidies and use the success to chase government grants and reinvest that money for the greater good.
It amuses me to imagine, how grandparent imagines investors cash out of biotech: buying a large pool of gold and swimming in it?
If you make a billion dollars on biotech... it has to go somewhere (banks are for chumps!), so it's going back into either the public market, or venture capital. And if you made a billion on biotech once....