What could be the target applications for these BJTs?
There are many applications, such as industrial controls, in which the gate of a MOSFET is just too delicate for long-term reliability. A high-voltage, yet low-energy spike that can destroy a MOSFET will simply be absorbed by a BJT and it will keep on working. Yes, you can add all sorts of external protection for the MOSFET, which may or may not work, but that just raises the BOM cost anyway.