> and the replacement cost is a one-time, relatively high purchase fee (with, usually, a similar if not higher ongoing maintenance cost) i'd wager complex sche

> and the replacement cost is a one-time, relatively high purchase fee (with, usually, a similar if not higher ongoing maintenance cost) i'd wager complex scheudling software is probably licensed, not sold outright. many many millions a year to license. but yeah, lot of good factors you cite.