But developers using Macs for x86 Linux development is a common thing. Besides that they actually also might need the Mac part (Office, other software requirements), it certainly would be a hit to Apple, if those developers dropped the Macs.

I am one developer using a MacBook Pro at work, but depend on the ability to run x86-Linux VMs. I could not use an ARM-Based Laptop for work.

I can repeat what I wrote: people like me are dependant on MacOS and on Linux. Currently the Mac offers this ability. I would like to use a native Linux machine, but the only alternative for me would be Windows + VM.

And in any case, if the developers are happy with a non-Mac machine, Apple shouldn't be :). Unless they really want to continue their course of driving anyone who does not depend on a Mac for living and who doesn't have limitless funds away.

For private usage, I am about to switch to native Linux for my next laptop, unless Apple comes out with laptops with a reliable keyboard and realistic upgrade pricing again. Ironically, I would love an ARM-based laptop for private usage, if I can get one, I might just get the new Pinebook Pro.

All signs are pointing to Apple releasing a laptop with a new scissor-switch keyboard design Soon™.

I'm not sure what you mean about "realistic upgrade pricing"...it's not like you've ever been able to "trade in" an old computer to any manufacturer for a steep discount on a newer model (analogous to upgrade pricing of software)...

I mean the prices you need to pay to upgrade the machines beyond the basis configuation. Currently Apple charges 240€ for 8g of memory, and 240€ for 128g of ssd upgrade. The latter is 1920€/tb, while market prices are between 100€ and 300€/tb. A MB Air with 16g/512g is at 2000€, not counting Apple care, which is basically mandatory.