Well, only the older ones, the A7iii and onward don't have an accessible Android subsystem. But even for those before the A7iii, it's more of a subsystem and doesn't have access to a lot of functions that are done by specialized chips.

This is a huge area for disruption IMO. Using a Snapdragon chip plus an FPGA/ASIC to translate SLVS-EC to MPI and buying a sensor would allow for a camera with much better performance characteristics possibly even at a lower price, and the programmable hardware would open up an insane amount of possibilities and allow for incredible value.

If anyone wants to consider doing this, shoot me a message.