BL, I don't think that is the right take. They simply did not run trials that were large enough. You think that this is because they were being cautious - and if so then basically we invested based on the story they told us that they did not fully believe in. That is almost criminal, if true. I bought it because I thought this would work - but they didn't test it fully so we couldn't prove it.
This is a public company. We invested money that we expect them to spend to be successful. There is not other purpose for our investing. If I wanted cautious then I would have bought government bonds.