Supposedly, have heard this before, can’t find an up-to-date source but this seems credible, from March 2012:
Buried in reams of financial data is the revelation that Nintendo have 812.8 billion Yen (£6.7/$10.5 billion) in the bank - enough for it to take a 20 billion Yen loss (£163/$257 million) every year until 2052. Then there’s almost 469 billion Yen (£3.8/$6.0 billion) held in premises, equipment and investments. When that runs out - we’re in the year 2075 by this point - they’ve got some of the most valuable intellectual property in gaming to sell off before the company goes out of business.
