Ahh - your comments about Unix taking the wrong path in another story have more context now - I wasn't aware that GC had been integrated into an actual working kernel in the wild. Very interesting!
Afterwards, there were improved systems which provided a better experience, improved the programming language and had some parts moved from Assembly into proper Oberon. Namely EthOS and Active Oberon (AOS/Bluebottle).
If such systems had got industry support, who knows how mainstream computing would be now.