You have never been able to outright lie to your investors and nobody faces the risk of following in Elizabeth's footsteps save for those who faced with a losing technology choose to simply lie to their users and investors. You are as much at risk of meeting that fate as you are "risk" of finding yourself in a bank with a gun and a ski mask. If you find yourself outside the bank loading your gun then simply remove the ski mask, place the gun in your glove compartment, and go home.

In medicine you are indeed expected to stay in research mode forever until you have something that provably works. None of this is controversial or complicated.