@n0mesorah That’s incorrect. There are several high schools in Lakewood that predate the “nothing but Gemara” nonsense and they are some of the only places (other than the Cheder, Slomowitz’s and one or two others) that have to turn down more bachurim than they accept.
It’s not that there isn’t a market for it, it’s just that the type of person who is starting a high school in Lakewood has a lot of pressure to “keep up with the Cohenses” in order to attract the Top Guys. And with the current trends, that means cutting out most of the important subjects teens need to learn. It has the added advantage of making the school much cheaper and simpler to run, since the staff numbers are easily 1/4 of what they should be.