That's why reputation plays such a major role. You can't just create a school and expect people to sign up for it, unless you're doing accreditation which is expensive, and eventually employers will see how poor candidates are from technical interviews and word will spread about those schools.
What DBC is doing is building a brand and a reputation for having really smart people in their program. That's defensible and scalable. There are a lot of high-caliber people being involved with DBC now, it's no longer just Shereef (who is awesome).
I guess that makes sense, but the concept is only scalable if they can keep differentiating themselves from the inevitable charlatans that they will be competing with.
What DBC is doing is building a brand and a reputation for having really smart people in their program. That's defensible and scalable. There are a lot of high-caliber people being involved with DBC now, it's no longer just Shereef (who is awesome).