Well, yes - otherwise sales would have plunged by 100%.
If you search for "mac sales figures" it appears that mac sales have, somehow, simultaneously soared and plummeted. Just pick whichever figures back the story you want to tell.
Unfortunately, all the actually useful statistics (like, Mac sales over the last 5 years) are safely tucked behind paywalls - it's really not much use trying to extrapolate from a single quarter. Quarterly Mac sales have dipped during a quarter where no new mass market MacBooks or MacBook Pros have been released?! Please give me a moment to contain my shock and awe.
What
seems to have happened is that Apple saw a huge uptick in Mac sales around 2021-2022
(best reference I can find quickly). You can have fun speculating why, but there are plenty of reasons why 2021-2022 might have been special - launch of the new M1 Pro/Max MacBook Pros in late 2021? Covid increasing work-from-home, so more people buying their own systems rather than using (PC dominated) work PCs? Apple better at dealing with component shortages that other manufacturers? All likely - Apple certainly seemed to have a "better" pandemic than others - and all now returning to normal, replaced by a cost-of-living squeeze. So, yeah, seeing Mac sales falling off now is hardly surprising.
As for Windows/x86 compatibility - that was great in 2006 when Windows was still king and
lots of people had that one weird Windows application that they still needed, and even web apps tended to need Internet Explorer to work properly. The world has changed. "Available on iPhone and Android" is the new "Requires Windows 95", Safari is the new Internet Explorer (that's not a compliment, but its an improvement for Apple users...), people can remote-desktop from their Mac into a work PC, you can spin up an x86 Linux instance in the cloud whenever you need one... and if all that fails, Windows-on-ARM is legitimately available via Parallels (and will become more useful if MS makes a success out of WoA).
Boot camp was low-hanging-fruit on Intel Macs - they were effectively PC clones which only needed a BIOS emulation module adding to the EFI firmware (which EFI was always designed to support) to allow Windows to run pretty much out-of-the-box. It was never part of Jobs' plan and Apple only introduced it after hackers managed to install an open-source BIOS on an Intel Mac and demonstrate Windows running rather well. Once the firmware module was added as standard, Boot camp was nothing more than a point-and-drool tool for partitioning disks and pointing the Windows installer at the correct installation drive.
Boot camp on ARM - even with "Windows on ARM" - is a far more complex concept - there's really no concept of a "standard PC clone architecture" for ARM systems and Apple Silicon is very different from other systems based on ARM SoC designs. WoA would need new boot loaders, storage drivers, accelerated graphics drivers etc. to run on Apple silicon. Not impossible - but far more than just "signing a contract with Microsoft" - who would be nuts to sign such a contract anyway (officially endorse a processor which would blow the Qualcomm stuff out of the water but which none of the PC makers who make MS's money for them could buy?)
Apple's choice was to "not do Bootcamp" (needed by a tiny minority of Mac users) or "not do ARM" (which gave the ultra-portable laptops accounting for most of Apple's Mac business a massive power/performance advantage).