Canon is too big and has too much money in longer term investments/inventory, etc. to rationalize everything in a rapid manner. Far more likely they will:
- Phase 1 (in progress): Publicly state that they will no longer make new EF lenses, and not publicly slow down some SLR refreshes or just cancel specific lower-runner SLR refresh projects
- Phase 2 (3-5 years maybe): Throttle down EF production or make final large EF orders, shut down those lines, and sell to depletion; we start to see bread butter Rebels and XXD bodies go mirrorless only
- Phase 3 (8-10 years): Once the tipping point is hit for camera bodies in service / in actual use, they'd announce obsolescene of EF lenses and then you see a fire sale at all the resellers. Only 1-series and possibly 5-series keep their mirrors.
They have a way to go.
Again, you are speaking logically, not pragmatically. 'The world will be cheaper to support on one platform' is entirely true but entirely impractical. All EF users won't move to RF just because that's all Canon offers. If Canon (let's say) aggressive terminated their SLR lines across the board in 2-3 years and said 'you must buy a mirrorless camera',
Nikon will earn a lot of SLR business. Canon needs to show it users where the next exit is on the freeway -- not force them to take it.
Mirrorless will take over, surely, I don't contend that. But it will not happen overnight. Canon will not burn the people who have trusted it for so long just to get to their desired future state as profitably as possible. That would be cutting their leg off to run faster.
- A