Without divining, based on now-known realities, that they had no insight into, what could have been done?
Apple's total disintegration isn't entirely imaginable at this precise moment, but planning for some dreaded rainy day, what disaster strategies could they use to anticipate a total failure of their bread and butter?
Microsoft probably IS facing this scenario. What can they do?
I do agree with your assessment of AAPL vs MSFT. Apple has ingrained itself into the fabric of our personal lives in a way that would be very hard to challenge. Microsoft never achieved that - because it was run by corporate sales folk.
Apple's undoing, if anything, will be from being to greedy.
Meanwhile, consider that Microsoft was very strong in 2003, but through a few minor misteps, just missed the boat on a some key changes in technology. Then, when the things that killed their advantageous position finally made an appearance, they refused to give chase. Why they failed to jump on the new bandwagons, and how their own boat started taking on water, has a complex story of its own.
But yeah all that business, corporate, government, enterprise activity is probably plenty more than just life support. It's not like I read shareholder earnings reports or anything, though.
I've worked with some of Xerox's workhorse printers, multi-hundred-thousand-dollar systems that can crank out 120 prints per minute, sustained (hot-swappable paper trays, so you don't even have to stop to reload). But all of those were already being dwarfed in document presentation by a freely-available arrangement of software, with a $1,000 - $10,000 piece of server kit capable of kicking out millions of pages per day. A large print shop with several workhorse printers might make 1 million copies/day.
And at a fraction the cost.
Yeah, Xerox completely dropped the ball.
Source: worked tech support for better part of the 2000's and had to get Xerox printers on our networks often. Spent a lot of time updating settings when the contracts renewed and new printers were leased.