I wonder what percentage of global mirrorless sales are in Asia? When I look around, either in New England or on the West Coast of the US, at what people are actually shooting with, Sony APS-C simply doesn't figure. The vast majority of ILCs I see, whether at a National Park, a baseball game (not in the press well) or just people running around the city taking pictures of their kids, are Canon and Nikon APS-C DSLRs - largely Rebels and D3x00s, but a fair smattering of everything up to D7x00s and 80Ds. The mirrorless I see is Fuji, Micro 4/3 and Sony FF in reasonably equal proportion (I'm not counting - just noting "I see that from time to time"). I can't recall when I last saw a Sony APS-C body, except that one (out of 400 over the years) of my students had one. I've also seen a lone Pentax DSLR, a film Leica, a Nikon F (well, maybe it was an F2), an Instax (student also had a D3200) and a few medium format film cameras (a Holga and a couple of TLRs) among MANY Canon and Nikon DSLRs and various compacts with controls.
It's possible that this is another case of a very popular camera in Asia simply not translating West very well. The EOS-M line has a large percentage of global mirrorless sales, but you pretty much never see them in the US - it turns out that they are huge sellers in Japan. The Fuji X-A series (which many US dealers don't even stock) is very popular in Thailand (I believe). I wouldn't be at all surprised if Sony APS-C is similar?