At that time the machine didn't lack power. There was nothing similar. Large disks, large virtual memory, a 68k processor for driving the frontend IO, large bit

At that time the machine didn't lack power. There was nothing similar. Large disks, large virtual memory, a 68k processor for driving the frontend IO, large bitmap screen, 10+ bus slots, tape drive, ethernet, ... all for a single user. It's hard to imagine, but 10MB RAM were amazingly expensive in the early 80s. Similar for harddisks with 100MB... On a timeshared VAX 10-100 people had to share this amount of RAM...