Even then it was not universal. For example, that Apple I ad that got posted a few days ago mentioned that "the system is expandable to 65K". https://upload.wikimedia.org/wikipedia/commons/4/48/Apple_1_...
Seems like a typo given that the ad contains many mentions of K (8K, 32K) and they're all of the 1024 variety.
Someone here the other day said that it could accept 64KB of RAM plus 1KB of ROM, for 65KB total memory.
I don't know if that's correct, but at least it'd explain the mismatch.