[toni-a]

Not taking defence of Canon APS-C but you have all Canon EF lenses available for APS-C and that's a huge amount of lenses
Have used Canon APS-C for 15 years and was never disappointed.
Why Canon didn't make any 10 12mm and 16mm primes ? that's another question Tokina did make a very decent  10-20f2.8 but nobody was interested
I actually use 7Dmkii and EOS RP
to my knowledgw there's nothing in Fuji mount not covered in Canon APS-C (except maybe 16mmf2.0 autofocus)

You're missing the point.
Nobody buys an APS-C camera to use oversized FF lenses! Dedicated APS-C lenses with a smaller image circle can be made more compact.

Beside Fuji (and Pentax in the DSLR world), no other manufacturer has seriously tackled APS-C. This is especially true of Canon and Nikon.
I recommend you read some of Thom Hogan's articles: http://bythom.com/

again who bought sigma 50-150f2,8 DC OS HSM instead of Sigma 70-200f2.8 OS HSM ? despite using APS-C