Q: if there were no viruses then there would be no need for antivirus software. If new viruses are created, there is a need for updated technology. People who are caught cheating in casinos are hired to spot cheaters because they no all the tricks.
A: It is a nice "conspiracy theory" But taking 'Occam's Razor' into account, just look for the simplest explanation. Either: Antivirus companies create viruses in order to drum up business developing the software to catch them. -or- There are just bad people out there who like to brak things. Given human nature, I would bet on the latter