There are lots of ways to interpret any piece of information, but some are logical while others are nonsensical. The tech has been around since Sony launched the a7 and a7R in 2013. Hardly new. Yet only now (in one country, for a short time period) is Sony ahead of Canon for FF ILC revenues. The tech isn't different, what's changed is the recent launch of zero FF ILCs by Canon vs. 2 FF ILCs from Sony – one at <$2K (and lower cost is what buyers really want, your "educated buyers" tripe notwithstanding).
So you’re saying that if Canon launched the 6DII now, they would be outselling Sony? That seems quite a dubious claim

(Also, quite interesting that Nikon has not been #1 in FF sales in the U.S. in the past year with its D850, since that was a recently released FF camera and by your standards, “newness” is what counts.)
Low cost here is not the issue because Canon has two FF cameras well below the $2K mark- the 6D and 6DII @ $999 and $1599. And actually, you can even buy a 6DII with 24-105L lens for $2499- quite a steal! The equivalent Sony A7III package would run you over $3K. So given all of that, it seems extremely unlikely Sony is selling just on cost either.
And I quote from Nikkei Asian Review, for anyone who missed it:
“Canon will shift more of its focus to mirrorless cameras, a change in strategy spurred by sharp growth in the market. [...]
With mirrorless cameras rapidly gaining popularity and rivals like Sony breaking into SLRs, Canon decided it must ‘actively roll out products for a growth market even if there is some cannibalization,’ Sakata said.”
So there it is. It is Sony’s overall package of FF mirrorless tech in a small package that is getting the dollars, and we can surmise that specs such as DR, low light capability, and 4K video play a big part.
(Anecdotally, two photographer friends in NYC just had a choice to make to buy their first FF cameras- it was between Nikon, Canon, and Sony- one even remarked how she loved the Canon colors, etc. But eventually they both chose Sony A7IIIs on the basis of DR, low light capability, and value.)
Maybe it’s true that the novelty of mirrorless and value of better specs will wear off eventually, but so far, in the first half of 2018, they have not.
Nonsensical argument? Nope- pretty sound reasoning here actually- And I actually backed it up with a quote.
