You should clearly not enter a market you do not understand, because you'll probably lead you to bring a knife to a gunfight. But your conclusion about mass-ma

You should clearly not enter a market you do not understand, because you'll probably lead you to bring a knife to a gunfight. But your conclusion about mass-market is too broad, this is not a single thing and can really depend on your definition and perspective. Apple devices can be considered mass-market or niche.