Apple did openly court Unix users during the early days of Mac OS X. As a teenager during this era, Macs of this era were my dream machines due to Mac OS X, and I was so happy to buy an 2006 MacBook the summer after my freshman year of college with money earned from a summer research internship.

Here's a Titanium PowerBook G4 ad that says "Sends other Unix boxes to /dev/null": https://www.reddit.com/r/vintageunix/comments/b4kojo/sends_o...

Here's a snapshot of the software solutions page for the aluminum PowerBook G4 from November 2004, proudly touting Unix and even X11:

https://web.archive.org/web/20041126011836/http://www.apple....

Some quotes from the Power Mac G5 page (https://web.archive.org/web/20041126015955/http://www.apple....) from the same era:

"With the Power Mac G5, a researcher can now run both productivity applications and high-performance UNIX applications on a single system. Mac OS X Panther includes 64-bit optimized system math, vector and image libraries that take maximum advantage of the 64-bit G5 processor."

There was also a cluster in Virginia made of Power Mac G5s, which Apple also touted.

https://en.wikipedia.org/wiki/System_X_(supercomputer)

macOS needs its grid back