Apple Silicon is already well into the era of declining returns in terms of generation over generation improvements, and Intel's new mobile chips are competitive for performance and power use, while offering substantially higher display support.
Intel and AMD have been playing catch-up with Apple Silicon in terms of bangs-per-Watt for the last 5 years. They've barely caught up, and M5 MacBook Pros are still setting performance records for that form factor. NVIDIA and Qualcomm are producing
very Apple Silicon-like ARM-based designs, which are going to hit the same buffers as Apple Silicon. So, yeah, Apple will need to keep pushing ahead, but that's business.
What else are they going to do? Buy off-the-shelf chips from Intel, AMD, Qualcomm or NVIDIA which will be no better than the competition?
But I'm not really interested in the argument about where the future is going
just in the revisionist history that some people seem to be pedalling along the lines of "the Mac Pro never was (upgradable / intended to be upgraded)" etc, which is ahistorical fiction, as people who have the lived experience of owning them, especially the 2019 can attest.
Nobody here is saying that - of course the 2019 Mac Pro was designed for expansion. The point is that in industry most of that expansion happens on day one to meet whatever specifications the job needs. Mid-life upgrades
happen but they're not the Unique Selling Point some people think.
If we're running on anecdotes, I'm not "industry" but I used tower PCs for years at home and work and rarely upgraded RAM or GPUs "mid life" because, by that point, virtually every component was obsolete so (with a tower PC) the only option was a complete strip-down and new motherboard... and it was usually better to repurpose the old machine as a server, hand-me-down or emergency backup. "Upgrades" went in on day one. Day one upgrades happened on Macs because Apple wanted $silly for BTO RAM and hard drive configurations - even when the parts were standard.
and back to standard slotbox PCs, purely because it's cheaper to upgrade & configure components using their in-house IT team, who they have anyway, than to turn over every 3-4 years on any sort of lease programme.
Probably because they were PCs and could be thrown together from commodity components in the safe knowledge that every component manufacturer tests their products on Windows. Not so easy with Mac.
Plus "using their in-house IT team, who they have anyway" presumably means that the IT team were happy to take on a lot of extra work for no extra pay. The cost of IT hardware is almost negligible compared to the cost of labour.
I would say that Apple is painting itself into a very Black Swan Fragile corner, where everything they sell is entirely dependent on single-supplier, integrated manufacture products.
As opposed to being limited to whatever generic third-party components can do? Should they maybe switch to Snapdragon-X instead of Apple Silicon? Go back to Intel x86 and be a slave to whatever SKUs they bring out? And
still probably end up with stuff that's being fabbed by a single supplier
who aren;t contracted directly to Apple.
Apple have two options if they hit supply problems - they can look for other fabs to manufacture Apple Silicon (they're already talking to Intel according to rumours) or if, in some hypothetical near future, NVIDIA or AMD make something that's end-of-argument better across the range, they can switch architecture: something that Apple have successfully done 3 times (4 if you count 6502 but that's a reach) but which Microsoft/Intel struggle with.
If TSMC (or the Dutch firm that makes the machines that many fabs depend on) folded than I guarantee that Apple would have plenty of company at the soup kitchen.
They turned that around by cutting all the specialised products (the ones manufactured as specific configurations), and going back to generic products differentiated by the after-manufacture components installed.
You mean, like the famously not-modular iMac?
Jobs did axe the horizontal-format desktop Mac models which had become pretty pointless - but Apple were already making G3 mini-towers with slots before Jobs replaced them with the bblue-and-white versions.