It could be that the 'in your face' canon is due to their prominence in the DSLR market and might be the reason behind their P&S sales, Since canons dominance in the DSLR/Pro world is due to the fact they do indeed make their own DSLR chips, that it has an indirect connection.
This is a huge stretch of the facts!
Firstly, Canon's digicam stength preceeded its move into DLSRs, and surely stands on its own merits.
Secondly, Canon's SLR dominance also preceeded their digital SLR's. The SLR market pattern of Canon #1, Nikon not far back at #2 and other brands way back was well established in the era of films SLR's, and is probably explained mostly by the factors that already applied in the fim era.
For example, Nikon, Pentax and Konica-Minolta use the same 6MP Sony sensor in many of their DSLRs but Nikon's models sell far, far better: over a million last year of the D70s and D50, only about 120,000 for all the Pentax models using the same sensor.
The significant shifts in the SLR market caused by the digital transition are the rise of Olympus and of the new smaller formats like EF-S, DX and 4/3, the decline in market share for Pentax and Konica-Minolta, and the huge decline in market share for medium format and 35mm format.
I suggest that we try to move past the digital-inspired obsession with sensors as the only important aspect of a DSLR or of an SLR system, ignoring othe important features of bodies and the importance of lenses and accessories. This is the obsession that made so many people criticise the 30D (and D70s) as adding nothing much new, despite clear improvents over the 20D (and D70). If the 20D and 30D had been film cameras, no-one would have doubted the value of the 30D improvements, and the D70s sold very well.