I don’t want a laptop. But I don’t want to be locked down to 16GB RAM. Now I have not real world tested an Apple Silicon SoC machine with 16GB v my current 16GB Apple machine to see how much more efficient that RAM is managed, but for a 5+ year machine, I’d still like more headroom.
I purchased an M1 Mini when they first came out to test this very thing. The M1 is an incredible deal with unbelievable performance for its class. That being said, I think reviewers at the time extremely over-hyped the idea that 16GB RAM in the M1 was equivalent to 32GB RAM in an Intel machine (as well as 8GB equivalent to 16GB). I can say for sure that this is clearly not the case. The performance is so good on the M1 that it can
mask the need for more memory - but for demanding usage there is no substitute for actual RAM.
I also had been waiting for a desktop that could be configured to greater than 16GB RAM. As
@mcnallym has shown above - the Mac Studio is clearly a good deal in comparison to the Mini, if in fact you need a desktop with more than 16GB RAM. I did the same calculations, and after realizing that Apple will never give anything away for free, came to the conclusion that a specced up Mac Mini Pro would be too close in price to (and perhaps even exceed the price of) the Mac Studio to be worth waiting for.
That being said, if Apple at some point releases a Mac Mini M2 Pro, it would surpass the performance of the current Mac Studio in CPU tasks, but I highly doubt Apple would release a machine anytime soon, and would expect something like that closer to when M3 machines were about to be released. If a Mac Mini M1 Pro is released in the near future, it will have to be compromised in some way to be cheaper than the Mac Studio (perhaps ports could play a role in the difference), otherwise Apple's whole pricing structure would fall apart.
I do question, though, why Apple still has the Intel Mac Mini hanging around, as if it were a placeholder for something...
Personally, I think the Mac Studio at $1999 is a heck of deal for an Apple desktop that can be purchased today - as opposed to hanging on to what might or might not be released in the future.