There was a DPReview interview with a Fuji SVP of marketing:
Is there more profit to be made in the high-end market?
Yes. For two reasons. The bodies themselves, we can sell at a higher price but also we sell more lenses with higher-end cameras, so overall it’s more profitable. Our research shows that the attachment rate for a high-end camera like the X-Pro 1 is around 3.8, whereas cameras like the X-A1 it’s more like 1.2. With low-end cameras people often just stick with the kit lens.
So this is interesting: entry level mirrorless don't really make sense if buyers only stick with the kit lens.
It's also common for reviewers of high end mirrorless to conclude that once mounted with large lenses, the small bodies don't make much sense.
Taking all these together, I think Canon sees DSLRs as the right answer for high end needs anyway, and entry level or small form factor better served with large sensor, fixed lens compact and all the optimization benefits.
I'm the kind of buyer who wanted APS-C quality in a small camera, but didn't want to spend $2000 for a top end mirrorless with a collection of lenses. The price and size of the M did it for me. Not exactly an entry level buyer, but also not committed to a full collection. But I'm probably not a typical buyer.