Seems a bit of a strange feature to even want on a product targeting the education market. In a classroom setting you don't really want students to be able to set fuse bits so the device can't be re-programmed.
Presumably this is a sign RPi are deliberately aiming to straddle the hobby and light commercial markets?
They have absolutely been aiming at industrial customers already. It would be hard for them to justify the cost of a custom die without having some volume to businesses. (And the previous raspbarry pis have absolutely been popular in industry as well, I would be surprised if hobbyists and learners are even half of their volume)
Presumably this is a sign RPi are deliberately aiming to straddle the hobby and light commercial markets?