Steve Gibby
Red Savant
Spielberg has worked with the same editor, Michael Kahn, for all of his films. Kahn is still using KEM flatbeds and Moviolas by choice. There is no way that Spielberg will change his process in the near future.
If he's comfortable with the film workflow, and doesn't want to change, he's obviously at the point in his career where he can make that choice to stick with film.
As a sidelight, a friend of mine, who I served on a film festival Board with, is an Oscar winning editor who has traditionally edited film on a flatbed. His name is Neil Travis. He received an Oscar for his editing of "Dances With Wolves". He has also edited a long list of films we've all probably seen, among them "Sum of All Fears", "Clear and Present Danger", "Terminator 3", and many more. I had breakfast with Neil and Morgan Freeman at Neil's ranch recently. Neil and me have had some film vs. digital discussions, as you might imagine. We both taught seminars at a recent film festival, mine on digital acquisition, and his on editing. His approach to the move to digital? He has brought on a partner editor who is younger, and is an ace at digital editing. When they edit projects they team edit. Neil's expertise in film editing dovetails nicely with his partner’s expertise in digital editing. Good editing decisions are still good editing decisions, whether it's being done on a film flatbed or on an Avid, FCP, or some other NLE.
I've edited my entire career and I've learned that I prefer a digital workflow. To each their own...