A lot of old mission-critical banking or commercial software systems have been running on those machines for decades. Before the AI age, it'd seem impossible to migrate those programs off. Now with the AI help, there might be a glimpse of hope.
Honestly, a lot of it was not that hard to port if you really wanted, it's just that the ROI of replacing the entire stack including physical machines was not necessarily good. The parts where ROI was good got replaced already.
Honestly, a lot of it was not that hard to port if you really wanted, it's just that the ROI of replacing the entire stack including physical machines was not necessarily good. The parts where ROI was good got replaced already.