Earlier quoted context omitted.
Not only does Dev stop, but the people that built the app, agreed on the specs and really understood it, all left too. Auto update is unfortunately something that's just not worth the risk in a lot of cases.
With web apps there should be very little risk if you followed standards. The problem is most of these places chose to follow IE6 instead of standards. They will put this off until it becomes a major issue or someone else takes their business. By know I've left banks of terrible client facing systems but internal enn efficiencies are even obvious. It took almost 8 weeks, multiple in person visits, and a freaking type…
You might be surprised by the number of subtle bugs lurking in corners left out as "implementation detail" by standards.
I've learnt to treat browsers as capricious genies that stick to the letter of the standards, but inevitably screw you over by inconsistently doing the opposite of what a sane person would have regarded as implicit.