It seems to me that the Raspberry Foundation chose the Broadcom SOC of the Pi because it used the Videocore VI (Pi 4/400) or Videocore VII (Pi 5) which is documented and for which there is an Open Source driver. There has even been work on Vulkan on this subject. Wouldn't this allow, based on the existing Open Source code, to build a driver for MorphOS? If necessary, with a bounty to finance the work. This has been possible recently for older AMD GPUs. And in any case, for new x86 machines, it will also be necessary to develop the drivers (I am thinking of laptops and integrated AMD GPUs). For the other drivers (bus, audio, USB, network, wifi, etc...), the workload would indeed be enormous. But is it impossible? Here again, the work seems to have been feasible for Macs, X5000, partially for the x86...

In terms of performance, the Pi 4 is significantly faster than a G5 and for a Pi 5 the difference will be even greater. We would really gain from the change. Especially since MorphOS is much lighter than many Linux distributions. For everyday use (office, internet, drawing, light photo editing, a few not too demanding games), it would be enough for the majority of MorphOS users, right?

As for fears about availability, there was indeed a difficult period, but now it is easy to find. Easier than an old PowerBook, iMac iSight or PowerMac G5 in good condition and with the right graphics card. And it is also very common second-hand. Not to mention the reliability on Apple PowerPC hardware that is approaching 20 years old.

For x86 hardware, my fear is that we are on very specific configurations, which will soon encounter the same problem as Macs: not found new soon.