And there is the dilemma, you have a 1994 OS running on 1994 hardware. If you upgrade the hardware you break the OS, if you upgrade the OS you break compatibility.
Apple made it through this dilemma because it was a living company, CBM, Amiga Inc and Escom are all long dead, had their been a living company directing the development of the Amiga you would have seen a slow development of a PPC Amiga OS with a compatibility solution for 68000 code, software updated to PPC standard, then a radical shift to say a new GUI on top of QNX or Linux, with a compatibility solution back to the old PPC software but not the 68000. The developers would at each level be updating their code.
Now what you are faced with is that a quantum leap in hardware and software is required, there's nothing gradual about it at the cost of compatibility with all your existing software. This without a company at the head, without developers and without financial backing and wit only a small fraction of what was a small user community left. It's an impossible situation.
At todays prices the best bet would be to produce Amiga Classic replicas for the hobby folks. That's pretty much the Amiga market these days. But you would need to be careful, the market is small and you run the risk of flooding it. Produce a limited edition collectors series. Each machine would be engraved with a plate bearing sequence number, Say Amiga Classic 3000 Collectors Edition #1 of 100. That *would* sell, though in a classic PPC board on top. The market would bear several thousand dollars on that. It's still a small market, maybe a 1000 machines with a thousand dollar profit on the machine is still only a million dollars.