Kroenke himself said not that long ago that the brand is perceived and supported differently in the PL, compared to US sports. He absolutely believes that PL fans will follow the team come what may - the support doesn't tend to wane as much through poor seasons as it does in the US. He knows he has a captive and growing market - his shares only continue to rise. Why sell?
Even if you buy into the idea that Usmanov is really the man behind Moshiri, why would that make him more likely to sell his Arsenal shares? If he can be 'officially' involved at Arsenal and 'unofficially' with Everton, why change that? (I'm not saying I buy that he IS the man behind the scenes, btw, just that if that's the argument FOR him being the secret puppet master then that's my question back).
I suspect today is just another shot to see whether Kroenke has hit the point yet where he's bored waiting for Usmanov to sell. It's another way of Usmanov saying to Kroenke he ain't going anywhere. I'd bet they'll continue to dance this dance for many years to come.