Well, er: the widget writers could get paid for their work if they chose. They could set up their own site, arrange for payment processing, advertise, and handle tech support.
Or if that was all too much hassle for the occasional $10 registration, they could just make their widget freeware. Which most have elected to do.
That has nada to do with how the writer of Konfabulator chooses to write the terms of his license. The way it stands, if having it on the Win box is of value to you, you pay for that value. If it isn't worth anything to you, then it'll be no hardship to do without it.
Interesting reverse argument that a large company can get paid for installs of the software on multiple machines, whereas a single programmer shouldn't.
I'm a loyal Sony purchaser, by the way, so Sony ought to give me a free TV for my den 'coz I already bought one for my living room. Besides, the only reason I bought their TV was because of all those programs that stations provide for free. Sony should realize that those stations are doing them a favour and not rip me off by charging me twice for 2 TVs.
Huh.
Oh, forgot. If you ARE one of those people who have actually written a widget and placed it into freeware, then I am totally mistaken and maybe you should get a free license in appreciation, 'coz you've earned it.