How do you prevent a user from trivially modifying a normal, compiled from C installed on my desktop app such that it does not require payment? In the end, you can't. The mechanisms that are effective in this case are the same mechanisms that can be used in JS.

Do you realize that the foundation came first? The corporation was created later. The IRS said that Mozilla needed to pay taxes, but could not because it was a non-profit. So the corporation was created to handle the money.

Or maybe you are off by about an order of magnitude on your hard drive calculation.

$50 / 80GB = ~$0.63 / GB, not $6.50

Makes a bit of difference.