On a long enough timeline you are absolutely correct

I will get one. But I don't think it will be with this community.
I've never had an oscar before and they have staggering intelligence I hear, maybe that would be more appropriate.
I have a 65 gallon that is 36x18x24, I can probably raise a Red Devil in there for awhile. It is full of Malawi cichlids I got at about an inch each. They are at 4-6 inches now....it got crowded so I gave the really violence mbuna and the ugly OB peacocks to the ethical LFS owner. The only one I miss is OJ, the bright orange Red Zebra...he was a killer and a beautiful fish and he was a crappy little buggy eyed runt when I got him at a grocery store (poor guy).
I wonder how big of a fish the 65 gallon could support. I know it wouldn't be a good forever home, and honestly I wouldn't want to keep a fish like that alone in anything smaller than a 90 gallon, because a 75 gallon really is just too short in height. The 65 has the height but it is only 3 feet long.