Brekken's Law (assuming that's his surname from the email in his profile). It's a snowclone of Zawinski's law of software development[1]:

Every program attempts to expand until it can read mail. Those programs which cannot so expand are replaced by ones which can.

It really is true. My previous employer had a dream of turning their extremely specific web app into a platform, with an app store and everything. I assume that being a platform means big bucks, idk.

[1] https://en.wikipedia.org/wiki/Jamie_Zawinski#Zawinski.27s_la...