FTR, your assumptions don't hold. I paid $12 on sale for my Windows Server 2016 Essentials license. Completely legal. I even called Microsoft to verify. List price was $399 for 2016, now $501 for 2019, but nobody seems to pay list price. Now, compare $12 - or $399, or $501 - over, say, five years to $1800 for Sync Business over five years.