1) It would validate the approach. If somebody is not willing to pay $1 per month, the value of the service for them is obviously too low. 2) it would make abu

1) It would validate the approach. If somebody is not willing to pay $1 per month, the value of the service for them is obviously too low. 2) it would make abuse much harder: registering 1M fake users becomes costly, and the payment leaves a track to a real credit card.