"$1m can support a small family comfortably for about six years."
Only 6 years? Seriously??
I figure 1m$ would support a family of 4 for about 15 years if you figure buying a house, a car or two, and furnishing said house, and upgrading to modern technology, before figuring a yearly income, which is around 42k/yr, not counting any additional income from a job.
But why would i turn down 2.5B$?
Because i have absolutely zero faith that the purchasing company would do anything but destroy the brand i created, I'd rather take my income from selling said brand and keep ahold of the title I saw grow to a hit in the industry, and put extra into making a sequel that would do even better and be more of what the fans seek, and make all of that all over again.