It might be somewhat prohibitive to print the model weights for any sufficiently large model, though.
Edit: maybe 10k pages
It only takes one for a PoC. It only takes few to establish a service. Spatial and color accuracy is going to be a challenge, but I imagine there already exist methods to correct for that - e.g. printing reference patterns along with the data, so the scanner/digitizer can calibrate to it on the fly.