Well you've not provided anything to show otherwise, you just made a claim about it being "even stevens" and didn't support it. Above you've got an example of a very large company and a large sample size of laptops used within it which at least you're aware of now. Sure benefits are context dependent but that is perhaps clutching at straws a bit to claim it is "very" context dependent, in a general context it is relevant, there are some exceptions where a windows machine might be more suitable.
Bottom line though is that they've been shown to be cheaper within a company using a large sample of them, not about the same costs but rather showing significant savings.
Large, self-selected or otherwise biased doesn't mean a good sample; it's large and better than pure speculation - that's it.
I made my claims based on two points of reference in my mind:
1) Due to the distribution and market share, as in:
https://en.wikipedia.org/wiki/Usage_share_of_operating_systems#Market_share_by_category
purity and lack of complexity are unlikely in any credible enterprise.
2) Costs will balance out within accepted variances of most budgets - variances are context dependent. If they are significant either way, action will be taken.
With your leading example, I look to the source - JAMF - people who pushed the story and got it picked up elsewhere:
https://www.jamf.com/blog/debate-over-ibm-confirms-that-macs-are-535-less-expensive-than-pcs/
- Tagline claim: Mac $535 less expensive than PCs.
- Actual article: "...saving anywhere from $273 - $543."
Both came from the talk at their event.
The scheme at IBM started in 2015, the article popped up in 2016: the numbers for the article, four year accrual and future growth are estimates. The keyword here was that IBM 'expected' to hit 100K Macs deployed, whilst maintaining the adoption rate healthy and management costs more or less fixed. The adoption rate trend looks like it was based on their employee survey and install base.
If you could get IBM's finance team to release the actual figures at the end of 2019/2020 for the guy's budget, then you could look at something concrete to compare the estimates against.
Regardless, JAMF followed up:
https://www.jamf.com/blog/total-cost-of-ownership-mac-versus-pc-in-the-enterprise/
Here's their summary graphic, exaggerated by them for effect - you don't have all the information in the article to actually properly scale that stack, or work out the savings' range proper:
Points to note:
- AV - which AV? Is this the market average for all AV software? Leading titles for both platforms?
- Windows 10 Pro licence - they themselves mention it's at nominal cost to OEMs; IBM would not pay the full retail price for it in their wildest fugue state
- Same issue with the Deployment solution factored in as in AV part
- Help and support part you already know my issues with
Finally, we get to the bulk of the direct software cost of managing these systems in the enterprise: JAMF vs Intune/SCCM. This is their core argument: you don't need the latter for Apple stuff; you need it for all Windows clients. That is, you save via the pure JAMF/Apple route and can keep that sufficiently isolated from your Windows environment to avoid further licencing costs/problems. How likely is that given IBM's own device and software distribution? Will JAMF and Microsoft keep their prices constant?
Further, these costs will be transferred to the Mac clients, on top of JAMF and the costlier base proposition, in two scenarios:
*Apple kit must be integrated into the wider Windows infrastructure
*Remote access, virtualisation and dual-booting; all common workarounds for any application specific Apple requirements
Depending on how and where the boundary is broken, you pay a price which must be fairly apportioned, or at least acknowledged by Apple advocates. The complexity in time and support needed only grows as the number of your devices and interactions between them grows. This is worse in mixed environments, where you can have incidents spanning two or three platforms (all involving one user or multiple users on multiple devices).
Given the rather vague data titbits and the strong hint that significant contributions were factored in from mobile workers and those few pure Apple locations - after deployment; I remain convinced it's even but slanted to plug the PM's approach, JAMF and Apple showing a pulse in the workplace outside its traditional footholds. Which was the whole point of the talk.
This seems like a non point, even as a consumer you can get cover for a longer period than that but either way it applies both ways and people tend to not get a brand new laptop on an annual basis.
It's a cost and time spent issue. If your more expensive device on average is not expected to last to realise its full cost benefit, then you aren't really getting the full benefit.
You can play the insurance market vs both PC and Apple manufacturers' offer. But it's still time and money spent to get a supposedly 'free' cost benefit on the Apple side, for which you've already incurred higher upfront costs.
What's next? We can look to the future of cloud infrastructure where there's easier centralised management and any client can access the standardised work environment to do whatever. There the underlying cost of the client becomes the biggest potential saving per worker.
Context is king, dowie.