why should there be new EF/EF-S lenses all the time? What EF-S lenses are really missing - considering the target group? Most "Rebel" customers will not even buy a second lens beyond the kit zoom. And the limited number of xxD/7D customers who are into birding/wildlife and use APS-C "for reach" are typically using/buying EF tele lenses, which would not be smaller/ lighter/cheaper if they came in EF-S mount.
so, really what is missing in EF-S and EF-M from Canon's business perspective and from majority of customers' view?
Fuji is forced to offer all sorts of fancy, expensive crop lenses because of their (dead wrong!) decision to skip FF entirely. Canon EF-S customers can also use any EF lens natively.
Fuji X users are a tiny minority of folks (5% market share or thereabouts?) willing to "pay FF prices for crop cameras and lenses". i bet there are only a couple hundred people worldwide paying 1300 € for a Fuji XF 56/1.2 CROP lens. folks able and willing to spend that kind of money on a lens are typically smart enough to spend it on FF gear. Or they buy Leica, if they are into maximum "hipster show-off factor". Fuji? no cigar.
Fuji X system will suffer the next major blow when Canon launches an "entry level" FF EOS R model at a more affordable price similar to Fuji X-T3 abd when Sony finally brings their next gen A### bodies to market.
A simple EF 85/1.8 or RF 35/1.8 lens gives Canon FF users more photographic potential than any fancy-expensive Fuji XF f/1.2 crop lens on any retro-styled Fuji X crop-sensor body.
Even as a rather Canon critical market observer I must say that Canon got their lens mounts and lens lineups and the transition to mirrorfree very well sorted ... just a few years late.
for me not much is missing in EF-M lineup. a compact, moderately fast tele prime eg EF-M 85mm/2.0 IS STM along the lines of the 32/1.4 would be great. And maybe a 50-150 constant f/4.0 zoom ... but might be not feasible within EF-M size limits (max. 58mm filter thread and 61.6mm max. diameter).
So in summary:
* EF-S is done.
* EF is in "maintain during transition" mode.
* EF-M is in "maybe the one or other new lens if 32/1.4 sells reasonably well".
* RF is "full speed ahead".
Makes perfect sense. Canon has competition cornered.
* Sony will be #2 if they soon beef up their APS-C lineup with some "killer" A### bodies - both on "hi end" at usd/€ 1500 (Fuji X-T3, Canon EOS M5 II) and at "low-end" around 500 usd/€ (Canon M50/Fuji X-T100).
* Nikon suffers deservedly and will fall to #3 due to lack of mirrorless APS-C system.
* Fuji locked in at 5% market share due to no affordable crop and no FF mirrorfree system.
* Oly, mFT and Pentax/Ricoh are "walking dead" already.
* Pana/Leica/Sigma L-mount initiative will not get beyond 5% market share at best, due to big size and high prices.
* Too bad, Samsung threw in the towel so quickly, would have liked to have them around offering impressive gear like the NX-1 which just had the bad luck to be ahead of its times by 3 years.