At release, we wanted to add support to our product line for the CM4 and needed some to test. However our MoQ was 200. Fast forward to today, we can’t really get CM4s or regular pis fast enough. We recently secured enough for the next 4 months (~800 Pi4 8GB,) but it’s always a battle to find large quantities.
We have a vendor that assembles these for us, so they all come pre-assembled. We’ve swapped parts in our BOM for these at least 13 times in the past year. Change SD cards, change microHDMI adapters, power supply, change case, pi model, etc. Relatively painless, but becomes a problem when 30 days of back order is ~150 raspberry pis.
I still wouldn’t even consider swapping to another device, though.