"93 per cent of people have anti-virus software on their PCs, almost one in three people (29 per cent) don’t have any anti-spyware software."
that's becuase the A/V A/S sellers confuse the market.
if someone is on yuo machine is on you machine that you don't want, it's a virus as far as most people are concered.
Ask the average Joe, if they have a password stealing program on their machine, what would they run. Most would say "Oh an AntiVirus".
What is needed is single products, but most companies like to sell you two items (or three if you include a firewall).
Most people would prefer a simple all in one package (that works). You click one button adn it does everything.