When an entity (organization, person) does the best they can but are hindered due to outside influence or chance.
Perhaps "thwarted endeavor".
Thwarted describes something that didn't work out, that was disappointingly unsuccessful.
Endeavor is a purposeful or industrious undertaking (especially one that requires effort or boldness).
If they are being deliberately hindered, I would probably say they were hamstrung or hobbled.
If the hindering was more incidental or accidental, then I might say they were being weighed down or encumbered.