>>SNIP
>>>
>>>And keep in mind that gravity is a free public service - they never turn it off, not even on weekends, completely free of charge.
>>
>>So far. If genes can be patented, someone will try gravity sooner or later.
>
>I'd just like to know how would they switch it off if I don't pay :)

They don't have to... just ruin your credit rating and you're done like dinner.