I honestly don't believe A.Inc would be able to challenge or lay claim to anything other than purchasing the rights to use certain TradeMarks & Logos...
There are countless sites out there where you can download KickStart ROM image files and WorkBench Disk sets, now you're not going to tell me that A.Inc doesn't know or at least has come across some of these sites...
If they or whomever had and they felt they could prove this in a court of law then I'm pretty sure they would have taken action long ago to shut down such sites. As no-one has then this just confirms my belief that no-one is either able or willing to challenge this in a court of law for the simple reason being that they know they could never prove ownership and all they could prove is the right to use certain Tradmarks & Logos...
Reckon after all these years of speculation and BS that this was finally challenged and put to rest one way or the other...
Side note: Everyone should start up a website and place the KickStart ROM Images & WorkBench Disk sets on them for free download, pretty sure not many will be challenged and any who are can simply ask for proof of ownership before having to shut down their site, best of all this can all be done for next to nothing...