With prices all over the place (so far we've heard $300 to over $1000) that it more likely the reason its not done. As with any process if you stick with one motor (say 216s) and get all the jigs and fine tune the workflow you could easily make money on the lower end of the scale.
Babit or titanium you only need to be good down to a ten-thou. Even that is probably overkill.
Now if the owner thinks that his newly babited motor is gonna last 50k that's possible... but not likely. The perception that it shoudl last as long as a modern bearing is going to be more of an issue that melting some metal and pouring it.
