I think it's possible, even likely, that the window of opportunity for Destiny to market it's patented software to other industries has closed.
Back when some of us first started out with DSNY, maybe 6 years ago, the field of digital security was in its infancy, relatively, that would have been the time to strike. No one was talking about fighting keylogging or securing the blockchain or protecting cybercurreny wallets.
The field has grown very sophisticated and very fast and, now, in the whole scheme of things, it doesn't seem like encrytping digital music files would be any sort of major problem. I'd guess that many companies can now use their own secret sauces to do the same thing, maybe some are maybe some aren't, who knows.
Anyway, it's also possible that no company is going to pay a premium for DSNY at this point - they can probably do the stuff on their own, and, more importantly, it's not a great revenue producing field, it seems, even at best. It can and probably will bring in somewhat more earnings, mostly likely not huge, though, it's not like Destiny has the patents for OOBA, for example. Bigger companies have bigger digital security fish to fry.
I have to give Steve V credit, though, that he saw back when that the company would have to expand its menu of products to remain viable and continue to be relevant and increasingly profitable. Unfortunately, he came up with an incomplete solution to an unsolvable problem, and lied about everything all the time.