That it will be demand it is necessary that many people will buy Romad antivirus, use it and pay money for antivirus.
To sell antivirus for money it is necessary to have a big database of viruses. That is why team of Romad distribute antivirus for free.
How long to collect a base of viruses. It is necessary to earn on product, that is why it is very important to sell antivirus for money.