I just think word of mouth is usually stronger than any marketing campaign, so if people are telling their friends that they hate something, trying to convince

I just think word of mouth is usually stronger than any marketing campaign, so if people are telling their friends that they hate something, trying to convince them otherwise throught advertising looks to me like a waste of money and time. Anyway, most people who buy a computer and don´t buy a mac can´t escape from vista, linux is not mom ready yet, so why waste time convincing people to choose vista rather than telling them they may need a new computer?