Nintendo's financial shortcomings aren't a surprise following last week's sales forecast revision.
Wii - Wikipedia
Nintendo on downward spiral as Wii sales fall off a cliff - CNET
Nintendo Switch Has Now Sold 55.77 Million Units Worldwide
Wii U's failure to wow leads to Nintendo profit warning, Nintendo
Nintendo Reports Revenue Decline and Expects Wii U Sales Crawl - GameSpot
Nintendo's Full Fiscal Year 2020 Financial Results – Nintendo Times
Wii U's failure to wow leads to Nintendo profit warning, Nintendo
New Super Mario Bros. Wii - Wikipedia
Nintendo Earnings: 64.7B JPY ($569M) profit on revenue of 174.3B JPY ($1.5B). Revenue was down 22% YoY. 3DS sales came in at 6.45M, up% YoY, with the number of titles sold jumping 20% to hit 46.78M. WiiU 0.76M units sold, down 75%
Nintendo cuts sales forecast for Wii U and other devices, Nintendo
Splatoon Review - Review - Nintendo World Report