There's no perfect system for everything, which is why I use 3 of the majors (I'm a PentNikCan shooter). It's taken some time to learn them all and get used to their individual pros and cons but it's been enlightening, worthwhile, and enjoyable for me.
Where I have to give Canon top kudos is their user manuals.
At least all the english ones I've read.
They're much better written, IMO, than the Nikon and Pentax manuals I've read within the last few years. (I haven't had a recent Panasonic or Sony to compare.)
If a new user takes the time to completely read a Canon manual, cover-to-cover, they'd learn a LOT, even if they aren't using a Canon camera.
For this reason, I can still recommend Canon to a new user, they'd likely find it a less frustrating and more intuitive introduction to DSLR shooting. Someone with more experience would do well, possibly better, with one of the alternatives, depending on what their intent was for such gear.
This kind of thing can result in more sales. and, once in, likely repeat customers.
Mfrs should really give more thought to how well their manuals are written - that's if the buying demographic still READS paper manuals... All too often I see questions on various forums that are well documented in the basic user manuals.