They could easily give us a system that can be easily upgraded. At least the SSD.
And I would inmediately put an order for a 256GB Mac Studio with 1TB SSD, if I were to know that SSD can be upgraded later on. I dont even mind if I have to buy premium SSD upgrades from Apple.
But locking the system in and knowing the decision is final? No thanks. And no way I am shelling 18k or whatever outrageous sum they ask for 8 extra TB.
It might be they are leaving money off the table with their greed.