}
Okay,
Despite what the RoaringApps website has reported, it appears, in fact, that none of the CS2 suite is compatible with OS X after OS X 10.6.8 Snow Leopard.
So, my humble apologies.
It took me some time to do some web searching to confirm this and the reasons.
So your are correct.
So, I found you a CS3 Mac version of AI on Amazon through a third party seller, but I do not know if you want to pay their offering price or not.
https://www.amazon.com/gp/offer-listing/B000NDIB8M/ref=dp_olp_new?ie=UTF8&condit ion=new
The less expensive Illustrator alternaive is Serif Labs Affinity Designer.
I use this, as well, and while there is about a week or two learning curve to get acclimated to the way Affinity Designer works.
I find I like Affinity Designer and the way it works for vector drawing A WHOLE LOT BETTER than AI.
I have pretty much stopped using AI and use just to import my artwork into AI or Photoshop for use at the printer.
I really haven't use AI that much, in over a year, and spend more time doing vector art in Affinity Designer.
I even like Affinity;s UI better even though it is NOT much Adobe-like.
Affinity Designer is a way cheaper, very competent and worthy Illustrator replacement.
So check the Affinity website here.
https://affinity.serif.com/en-us/
https://affinity.serif.com/en-us/designer/full-feature-list/#system-requirements
Take a look at Affinity Photo, also.
https://affinity.serif.com/en-us/photo/full-feature-list/#system-requirements
Both of these app are $50 each and NO subscription!
See if Affinity Designer will work for you.
Both these apps will run on OS X 10.8.5 Mountain Lion.
Serif Labs is working to have a complete layout, vector and photo editing suite that is scads cheaper for both prfessionals, aemi-professionals and hobbyists!
I supplied all the links you need to get yourself up and running on OS X 10.8.5.
And I did retract my last post to you as I was in error.
Sorry & Good Luck!