I imagine that a software company could 'get away' with these tactics because of the relatively uncrowded market. Since OSX is perceived to be immune to malware

I imagine that a software company could 'get away' with these tactics because of the relatively uncrowded market. Since OSX is perceived to be immune to malware, few people purchase separate OS protection software. Since few people are buying (and the ones that do often don't understand details behind malware detection) a company could provide software that works well enough to make customers feel safe without being truly effective.