It’s a myth that the “cash injection” from Microsoft saved Apple.
Microsoft gave Apple $250 million. The next quarter Apple turned around and spent $100 million on PowerComputing’s Mac assets.
Apple lost over a billion more before it became profitable. The $150 Net wouldn’t have been make or break.
Now Microsoft promising to keep Office on the Mac was a big deal
One way or the other, it was a cash injection from Microsoft, after all who paid the salaries from Office developers?
Also you're forgetting the part that those announcements gave Apple a good marketing for additional credit from banks.