We see this a lot with Switch ports, unfortunately.
and everything else too.
Theres less competitive prices to sell games in general on nintendo consoles typically.
Sales and the amounts of reductions have always been a weak point.
Necro-bump this 2020: http://gamrconnect.vgchartz.com/thread.php?id=229249
Bumb in 2021: http://gamrconnect.vgchartz.com/post.php?id=9047071