Thanks Benny! And good question - so I run a few different companies in the edtech and elearning space, and for some of our products, we do use platforms like teachable. However, this doesn't actually cut down on the cost or time to create it, since we still need the content - teachable just offers an easy, low-cost, pre-built platform on which to host it.

I could see how preselling a course, hosting it live, and using teachable to host the recordings of the first live version can work - and I know of someone who's generated over $10M doing just that, but that initial live version probably only get her her first $25k (at most) of the way there; once she decided to put time, effort, and money into marketing and scaling, she recreated the whole thing.

In terms of drawbacks to using a platform like teachable, the only real drawbacks I see are the limitations of the platform (this is why I'm open to investing/advising/cofounding opportunities in the edtech space - definitely room for innovation and improvement) and the fact that you don't own or control the platform, so if the whole thing shuts down, you're screwed...but that just makes a case for hosting a backup version or two (which I do and suggest anyway) somewhere else, just in case.