A 100% verifiable quote about memory from 1981:
Apple Computer president, A. C. Markkula, Jr. is
confident that
Apple products will continue to do well. “The IBM is more expensive
than the Apple II, and the Apple III offers better performance,” he
says.
Markkula points out that publications have been
incorrect in saying
that the IBM has more memory capacity than the Apple III. In fact,
Markkula says, both systems could support up to 256K RAM. Apple
however, currently offers 128K only. “We could offer more, but
frankly we don’t know what anyone would do with that memory.”
"Old-Timers Claim IBM Entry Doesn’t Scare Them"
<https://books.google.com/books?id=JT0EAAAAMBAJ&lpg=PA3&ots=UIUJBsfNdl&pg=PA5-IA2#v=onepage&q&f=true>,
*InfoWorld*, 5 October 1981