Oh let me fix that business model right away, the perfect version costs 100 bucks a month.

And it doubles down on being flawed, as people willing to pay those 100 bucks self-select as both gullible and having discretionary income. More-less the same story as with paying for ad-free versions of ad-supported services.

If it was truly that cheap it would fundamentally change society.

Unless the field is incredibly competitive though it will cost orders of magnitude more than this.

Regular teachers are trained by for profit corporations too. They are called private universities

In the US, most accredited private universities are non-profits.

"Among postsecondary Title IV institutions in 2020–21, there were 1,892 public institutions, 1,754 private nonprofit institutions, and 2,270 private for-profit institutions."

https://nces.ed.gov/fastfacts/display.asp?id=1122#:~:text=Am....

How many of those 2270 private for profit institutions are accredited?