I doubt that during the development of the
original Apple that they were anybody that a chip manufacturer would
approach about using their chips.
Some years later, Commodore bragged that they gave Jobs and Wozniak
their first chips. They meant MOS Technology, of course. And I would
find it believable that a small manufacturer, coming late into a hard
market, would try to sweeten their chips to developers whenever they
found an opportunity.
Doesn't mean it really happened that way, of course. But I find it
curious that Commodore would otherwise admit to giving a start to a
major competitor. At the time, I wondered why they would say this,
even if true; they must have been feeling very secure.