Why Do DSLRs Still Sell Better Than Mirrorless Systems?

Amateur Photographer investigated the reasons why DSLRs are still more popular than mirrorless cameras. They found the following reasons:

Smaller cameras are fiddly to use compared to DSLR
Confusing category names
Consumer are still hanging on to the glory days of Canon and Nikon (in the USA and also in Europe)
DSLR has wider range of accessories.
Low bugdget DSLR compete against system cameras