Anyhow, it doesn't matter. Software devs are the lowest cog, they don't get to extend the delivery date. All the layers above - management, marketing, sales etc need a date to work to to deliver their work, and they generate the $$$. No-one cares if the software is low quality, as long as it is delivered. Dev team can do further updates to bug fix after delivery. The end.
My favourite is watching successive generations discover thin client vs. fat client over and over again.