Current market (desktop for middle aged men who want to remember their youth) is a failure.
That depends on your definition of "failure" and your definition of "market".
Target needs to be shifted to the larger (and new to us as a community) market with the goal of obtaining 1% market share. I think we all can agree there is something special about the Amiga, or at least it's spirit that we have yet to find outside of our communities.
Is there? Define what is "special about the Amiga"... because I don't know. The only answer I can give are "old applications". For the problems they solve, there are either better solutions on more modern hardware, or the problems went away, they are no longer relevant.
It's that spark that we need to present to the rest of the world at their level at competitive pricing.
The "spark" that drove Amiga back then was competing hardware at competative price, giving rise to a software market. Now, competing hardware today spells "PC", and applications spell "Windows compatible". Or, at a even broader level "Smartphone" and "Apps".
Everything that drove the Amiga back then is still there today. It's just on different hardware, different architectures and different products.
I don't know which other "Spark" you mean if there is one. Again, the only spark I remembered went on to other platforms, and for good reason.
That spark needs to be not only aimed at middle age men who remember their younger years playing on a A500/A1200, but also the 30s and under crowd that haven't touched anything other then Windows, Android/Linux, or iOS machines.
Those people want "F*c*book" and "Games". Guess what, they can get that with existing hardware. Or rather, if you want to slam on a solution to that problem the name "Amiga", then it has to be something entirely different than AmigaOs because AmigaOs is certainly *not* good for those people and their applications.
What you fail to realize is that the market changed quite a bit from back then. Back then, the market was (relatively) small compared to today's hardware market, users were "computer freaks" that new about their machines and that defined "playing with them" as "programming them". You could sell hardware by advanced technology because the buyers understood a bit about technology.
Computers today are mass-products. The problems they solve are all-world problems, "F*c*book" I already mentioned, Office, mail, photography, video, games. Users have no clue about their machines, they only use them, and do not buy them because of their advanced technology, but because they have some fruit on their back or a red dot somewhere in the logo. At least the majority of users...
Now, what exactly is it that Amiga or AmigaOs has to offer here, and how to compete with such products? New hardware? That's PC hardware, because that's the only one that's available for a competitive price. Even the "fruit label" has learned that. Software? Well, that's currently still either the stuff from Billyboy, or the fruity Os. Pengiuns are quite irrelevant for the mass market (server is something different, but do you consider Amiga as a server product?) And even that is fading away as "product" means more and more "HTML 5" as operating system. Google has learned that lesson very well, and I believe that they will outlast Apple and MS for exactly that reason.
Now, tell me again which relevance AmigaOs could play under such changed circumstances. If I define it by "I need a browser for HTML5", then the Os underneath is irrelevant. But even for Internet, AmigaOs is unsuitable due to Security reasons. Or the utter lack of any security infrastructure to begin with.
The game is simply over, face it. It's an old system, nice to play with, interesting for historical reasons for a handful of old farts like me. If that's not market enough, I don't know.