In the CP/M market, small business Z80 systems with a hard drive could easily top $10k.
The Lisa was pitched at those markets, not people playing 8-bit games.
The Mac hit the midpoint between the two markets to create something new - desktop metaphor computing just barely at the absolute high end of the privileged consumer market.
With the original Mac 128 you got the world's most expensive toy computer. But with no significant games.
It was basically a proof-of-concept brand-building product for early adopters and developers. It wasn't until the Mac 512 that you could actually use it without worrying about RAM limitations.
