Squeak,
I would love to send my kids to South Shore Yeshiva it’s a very frum yeshiva, but the kids come out with an education and go on to higher education institutions. The only trade off (which i frankly dont care about) is that they will come out dressing normally (OMG!) and will have diffrent interests than their neighbors (who would otherwise be their friends), and even their cousins, who studied in more yeshivish places.
The real problem is that anyone who’s life has brought them to a place and situation where they can open their own yeshiva, ists usually because they themselves are coming out of learning for a long time. The people who want normal yeshivas to exist are the ones who already have jobs and cant open a school.