I guess they follow an approach which has been proven to work over, and over again.
Yes they have, but to my eyes over time all the "professional Youtubers" are starting to look generic. Many people follow these so-called influencers (and I fuckin' hate that term) because they perceive said influencers to be down-to-earth people, as opposed to bona fide celebrities or mainstream media talking heads. The truth is that those Youtubers are selling a fake image of themselves and are shilling products to no end--just like everyone else on TV or in movies--so what's the difference?
Youtube videos have definitely evolved over time though. For example, Youtube videos of today are much more higher quality production wise, than they were before.
This is true, but I don't equate higher quality editing or video production with higher quality content. In fact, I can't stand that standard hyper-editing that makes people sound like they're not even breathing while they speak.
In fact, to start off on Youtube now, you are pretty much already expected to have a decent amount of experience video editing, and being used to public speaking or at least speaking to an audience.
Youtubers don't have to have any ability for public speaking. They have to be able to speak in front of a camera, and there's a big difference. What they have to be most proficient at is selling themselves, and it certainly doesn't hurt if they're good-looking. And again, how is that different than the average celebrity?
Smash that like button and hit subscribe for more content <followed by profuse gratitude expressed to subscribers>. Over and over. I do hope the bitcointalk channel doesn't end up being molded from the same cookie-cutter pattern.