So if the average price was $50 in 2000, and is about $70 today, assuming a linear rate of price increases, it would be $1663.33 in 4024.

This is a terrible model: it likely underestimates as inflation is geometric rather than arithmetic.

For a geometric model we have r=1.011329 over this period, thus extrapolating we get a price of…

$208,200,000,000

Which is insane, because it is so low for Nintendo!