Earlier quoted context omitted.
The question is: how many of these will be maintained several years later? Can you build a long term project on these? Or the expectation is that one has to make a new UI anyway every several years to keep up with the changing fashion, so rewrites are inevitable?
Sure, if it works now, it'll work ten years down the line as long as they're not doing anything nonstandard. There's a big fear that projects that become unmaintained suddenly stop working; this isn't correct. Besides, all webapps are rebuilt in a 3-5 year cycle anyway so it really doesn't matter.
I know of at least one company with such a stack. Just like I know others with Web Forms, Stucts, SEAM, JSP, Zope and many other stacks in production.
Not everyone re-writes their webapps, specially in companies where software is a cost center and totally unrelated to their main business.