That would certainly be a way for the foundation to go all Apple, with 3-4 different storage amount levels. I don't like it.
Caveat: I think it makes sense that all RPI5 boards (except the lite Compute Modules) would have like 8-16GB onboard flash, via eMMC. If it makes sense, economically speaking. I think it could. The SD card aspect of the RPI sucks in so many ways.
Except that MMC versions of RPi already exist and it didn't really bring the world down. They're also significantly more reliable due to lack of horrible SD cards.
Those MMC versions are called RPI compute modules. They didn't "bring the world down" because they required a separate board for them to be mounted on.
Caveat: I think it makes sense that all RPI5 boards (except the lite Compute Modules) would have like 8-16GB onboard flash, via eMMC. If it makes sense, economically speaking. I think it could. The SD card aspect of the RPI sucks in so many ways.