>>2933810They're not playing second fiddle to "serious" dslr's because they're not dslr's.
yeah a dslr is great if speed is your number one priority, but for exposure control and focusing accuracy nothing beats an EVF and on sensor PDAF.
Sports - I concede, the DSLR is king
landscape, product, low light, architecture - mirrorless are far more suited to the job
Weddings and events - half a dozen of one, 6 of the other, the EVF is great in dim churches and shit, but lacks the fluidity of use of a DSLR.