Question probably not directed to me but surely the human cell...

Question probably not directed to me but surely the human cell organoid has to add some % to confidence. I cant believe the companies, like TIS (tissue therapies) for example, who go to medical trials only to find out their flagship treatment has no significant benefit. How the helll do you only find that out that far down the track. I have never heard of anything like retina in a dish but logically it has to reduce risk by at least 30 % i would think. I guess the bottom line with current target is we can see cells changing status but until a human actually tells us they can see better we still don't know.