UPDATE 14/9/20: Microsoft has provided the following vague statement on why Tell Me Why is not available in a number of countries, as reported by Eurogamer last week:
"Local availability of games may vary by market," an Xbox spokesperson said. "This decision is based on a broad set of factors and with a firm focus on the best gaming experience for consumers."
ORIGINAL STORY 11/9/20: Today sees the launch of the third and final chapter in Dontnod and Microsoft's engrossing teen drama Tell Me Why - in some countries, at least.