I have never heard of such a thing in 25 years of traveling domestically on my own. At least within the 48 contiguous US states, most carriers operate enough frequencies that there are at least several non-stop, direct, or connecting options per day between city pairs. And, in the odd case where there's not, there's probably a competitor that does offer a reasonable schedule. Very few business travelers are going to want to add another 10+ hours to the journey just to overnight under all but the most unusual situations. And leisure travelers that will book only the cheapest available option are going to be difficult to make money off of if you have to add a STPC to the cost.