No back story. Risks are quite visible. Yes company has much potential but to answer your questions:
Radiogel is another potential tool against solid tumors. It isn't going to defeat cancer by itself.
All longs want RDGL to be successful, but there are some obvious headwinds:
Management has fallen short vs. at least two forecasts this year.
Current offering appears dead in water. If RDGL doesn't have sufficient cash on hand to reach IDE approval (at which point raising more funds shouldn't be an issue), we're in deep merde and back to risk of bankruptcy like last year.
Nobody really knows what RDGL is worth without positive human clinical data, and that could be years off. Many may not wish to tie up funds that long on something this risky.
There is risk of another breakthrough approach, like immunotherapy making Radiogel obsolete before it can even reach market.
I'm sure others could list more reasons why we're at about a dime.