true, but it depends what the OP is after.. does he want to form a small group of followers, or does he want 1 million subs and earn a wage?
he's given no hint as to any idea's he might have,
my advice is just to upload stuff you have an interest in or a hobby, i do it myself and have >1,300 subs,
random vlogs while you're shopping in Tesco aint gonna cut it
Money is a big part yes. How good would it be to post a 10min video twice a week and make thousands. You have the small matter of attracting an audience though.