I have to think Walmart did extensive DD on Matt Moore and company before deciding to throw $11M down the sh!tter. Maybe they wanted to take a tax write-off. Maybe they wanted to do a favor to all of humanity by proving that Matt is the biggest scammer in all of history.
On the other hand, maybe they liked what they saw, despite what may have happened in the past, and decided to give Innerscope/HearingAssist a try in 1499 stores before deciding to expand to more of them, if they choose to do so.
$INND